Proving a quadrilateral is a parallelogram assignment - Theorem 1: A quadrilateral is a parallelogram if both pairs of opposite sides are congruent. Theorem 2: A quadrilateral is a parallelogram if both pairs of opposite angles are congruent....

 
Proving that a Quadrilateral is a Parallelogram . Font Family. Font Color. Font Size. Background. Font Opacity. Background Opacity. Monospaced Serif. ... Proving that a Quadrilateral is a Parallelogram . Volume. Speed. Enter Full Screen. Video Duration Elapsed Time: 00:00 / Total Time: 00:00. Timeline Progress .... Hibbett storm lake

Introduction to Proving Parallelograms; 00:00:24 – How to prove a quadrilateral is a parallelogram? (Examples #1-6) Exclusive Content for Member’s Only ; 00:09:14 – Decide if you are given enough information to prove that the quadrilateral is a parallelogram. (Examples #7-13) 00:15:24 – Find the value of x in the parallelogram ...Learn how to prove that a quadrilateral with given vertices is a parallelogram and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.Attorney For Car Title Problems / Proving A Quadrilateral Is A Parallelogram - Assignment Flashcards. February 3, 2024 Do yourself and the next person buying the car a favor and take care of this before attempting to sell. ... 6-3 practice proving that a quadrilateral is a parallelogram are congruent;Which of the following conditions is a quadrilateral proves it is a parallelogram? A. One pair of opposite sides are congruent. B. One angle is supplementary to both consecutive angles. Proving a Quadrilateral is a Parallelogram. 1. Multiple Choice. State which method we can use to show that the quadrilateral is a parallelogram. Both pairs of opposite angles are congruent. Both pairs of opposite sides are congruent. Both pairs of diagonals bisect each other. Both pairs of opposite sides are parallel. To find the area of a quadrilateral, find the height and width of the shape (for rectangles, squares, parallelograms and trapezoids), and then multiply the two numbers together. Fo...Geometry (all content) 17 units · 180 skills. Unit 1 Lines. Unit 2 Angles. Unit 3 Shapes. Unit 4 Triangles. Unit 5 Quadrilaterals. Unit 6 Coordinate plane. Unit 7 Area and perimeter. Unit 8 Volume and surface area.5. Based on the information in the diagram, determine whether the figure is a parallelogram. If so, select the answer with the correct justification. Yes, both pairs of opposite sides are congruent. Study with Quizlet and memorize flashcards containing terms like Complete the statement: A polygon with all sides the same length is said to be ...7.3 Proving a Quadrilateral is a Parallelogram. Definition of parallelogram. Click the card to flip 👆. both pairs of opposite sides are parallel. Click the card to flip 👆. 1 / 6.Corollary 2. Two parallel lines are equidistant throughout. Corollary 3. Consecutive angles of a parallelogram are supplementary. Corollary 4. The diagonals of a parallelogram bisect each other. THEOREM 4-15. If two sides of a quadrilateral are equal and parallel, then the quadrilateral is a parallelogram. THEOREM 4-16.Proving that a Quadrilateral Is a Parallelogram. Get a hint. Theorem 6-8. Click the card to flip 👆. If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram. Click the card to flip 👆. 1 / 5.Feb 16, 2017 ... (Geometry B, Lesson 3:Proving That a Quadrilateral Is a Parallelogram Unit 2: Polygons and Quadrilaterals) Find the sum of the measurements ..."Glencoe Geometry - Lesson 9-1: Circles and Circumference, Lesson 9-2: Measuring Angles and Arcs, Lesson 9-3: Arcs and Chords, Lesson 9-4: Inscribed Angles, and Lesson 9-5: Tangents: Key Concept Boxes"Proving Quadrilateral is a parallelogram (Different Theorem) Deleted for CBSE Board 2024 Exams. Previous topics →. Chapter 8 Class 9 ... Study with Quizlet and memorize flashcards containing terms like Theorem 7.7 = Parallelogram Opposite Sides Converse, Theorem 7.8 = Parallelogram Opposite Angles Converse, Theorem 7.9 = Opposite Sides Parallel and Congruent Theorem and more. Theorem 4.6: If one pair of opposite sides of a quadrilateral are both congruent and parallel, then the quadrilateral is a parallelogram. Proof (outline): Again, by introducing a diagonal and proving congruent triangles, we can show that both pairs of opposite sides of the quadrilateral are congruent; then we have a parallelogram by Theorem 4.5.$\begingroup$ @dxiv thank you for your interest in my question; to prove that, it seems to me, I should start by noting the figure in the center is a rectangle and then prove that the two triangles to the sides of the rectangle are congruent: the two triangles have and equal side (to side of the rectangle) and an equal angle (the 90° one) but I …Geometry 5.2­Ways to Prove that Quadrilaterals are Parallelograms 5 Name: _____ Find the slope of AB. Consider points A (-2,5) and B (2,7). Find the midpoint of AB. Find AB. Using Coordinate Geometry to Prove a Quadrilateral is a Parallelogram: Def: both pairs of opposite sides are parallel Thrm 1:both pairs of opposite sides are congruentProving that a Quadrilateral is a Parallelogram . Font Family. Font Color. Font Size. Background. Font Opacity. Background Opacity. Monospaced Serif. ... Proving that a Quadrilateral is a Parallelogram . Volume. Speed. Enter Full Screen. Video Duration Elapsed Time: 00:00 / Total Time: 00:00. Timeline Progress ... State the theorem you can use to show that the quadrilateral is a parallelogram. 3. 30 m 30 m 4. 5 in. 5 in. 7 in. 7 in. 5. 115° 65 115° 65° 6. For what value of x is quadrilateral MNPQ a parallelogram? Explain your reasoning. Q M N P 2x 10 − 3x Ways to Prove a Quadrilateral Is a Parallelogram 1. Show that both pairs of opposite sides are ... Theorem 6-11. if the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram. Theorem 6-12. if one pair of opposite sides of a quadrilateral is both congruent and parallel, then the quadrilateral is a parallelogram. 6-12 suggest that if you keep two objects of the same length parallel, then the quadrilateral ...Final answer: The figure could be a parallelogram if: One pair of opposite sides measures 10 in, and the other pair measures 13 in (Option 1) and One pair of o… Proving a Quadrilateral Is a Parallelogram Assignment Active Determining Whether a Figure Is a - brainly.comGeometry 7.3 Name: _____ Created by Richard Wright – Andrews Academy To be used with Big Ideas Geometry, 2022 Geometry 7.3 Proving that a Quadrilateral is a ParallelogramA trust deed, formally known as a deed of trust, is used with mortgages in some states to streamline things in the event of foreclosure. As with normal mortgages, the lender may s...If the measure of two consecutive angles in a quadrilateral is 91 and 91 degrees, is this a parallelogram? No, 91 + 91 = 182 so the angles are not supplementary. For a parallelogram with opposite sides given by 4r + 7 and 7r - 1 find the value of the given sides. The sides length is 15. For a parallelogram with opposite sides given by s + 5 and ...Find the measurement indicated in each parallelogram. 19) Find RQ 3x + 3 −1 + 4x S Q R P 20) Find m ...chapter 5 parallelograms. 5 ways to prove that a quadrilateral is a parallelogram. Click the card to flip 👆. 1) show that both pairs of opposite sides are parallel. 2) show that both pairs of opposite sides are congruent. 3) show that one pair of opposite sides are both congruent and parallel. 4) show that both pairs of opposite angles are ...$\begingroup$ @dxiv thank you for your interest in my question; to prove that, it seems to me, I should start by noting the figure in the center is a rectangle and then prove that the two triangles to the sides of the rectangle are congruent: the two triangles have and equal side (to side of the rectangle) and an equal angle (the 90° one) but I … The opposite angles of a P-gram are congruent. Parallelogram Diagonal Theorem (PDT) The diagonals bisect each other in a P-gram. Parallel Lines Transversal Theorem (PLTT) If three or more transversals cut off one transversal, then the segments are congruent. Study with Quizlet and memorize flashcards containing terms like Converse of ... First, we can use the Pythagorean Theorem to find the length of the second diagonal. 902 + 902 = d2 8100 + 8100 = d2 16200 = d2 d = 127.3. This means that the diagonals are equal. If the diagonals are equal, the other …chapter 5 parallelograms. 5 ways to prove that a quadrilateral is a parallelogram. Click the card to flip 👆. 1) show that both pairs of opposite sides are parallel. 2) show that both pairs of opposite sides are congruent. 3) show that one pair of opposite sides are both congruent and parallel. 4) show that both pairs of opposite angles are ...It is a quadrilateral where both pairs of opposite sides are parallel. There are six important properties of parallelograms to know: Opposite sides are congruent (AB = DC). Opposite angels are congruent (D = B). Consecutive angles are supplementary (A + D = 180°). If one angle is right, then all angles are right.Mar 23, 2024 · Proving a Quadrilateral Is a Parallelogram. 10 terms. brookewhealdon01. Preview. ... Geometry- [2B]: Special Parallelograms Assignment. 9 terms. WELCOME_TO_THE_CHAOS ... If both pairs of opposite sides of a quadrilateral are congruent, then it’s a parallelogram (converse of a property). Tip: To get a feel for why this proof method works, take two toothpicks and two pens or pencils of the same length and put them all together tip-to-tip; create a closed figure, with the toothpicks opposite each other. The only shape you can …Tip: To get a feel for why this proof method works, take two toothpicks and two pens or pencils of the same length and put them all together tip-to-tip; create a closed figure, with the toothpicks opposite each other. The only shape you can make is a parallelogram. If both pairs of opposite angles of a quadrilateral are congruent, then it’s a ...If you connect the midpoints of the sides of any quadrilateral, the resulting quadrilateral is always a parallelogram. Surprisingly, this is true whether it is a special kind of quadrilateral like a parallelogram or kite or trapezoid, or just any arbitrary simple convex quadrilateral with no parallel or equal sides. ProblemIn quadrilateral WXYZ, WC = 2x + 5 and CY = 3x + 2. What must x equal for quadrilateral WXYZ to be a parallelogram?6.3 Proving Quadrilaterals are Parallelograms Geometry Mrs. Spitz Spring 2005. Objectives: • Prove that a quadrilateral is a parallelogram. • Use coordinate geometry with parallelograms. Assignment • pp. 342-343 #1-19, 25, 26, 29. Theorem 6.6: If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a …If a quadrilateral is a parallelogram, then its opposite angles are congruent. If a quadrilateral is a parallelogram, then its diagonals bisect each other. If a quadrilateral has 2 pairs of opposite sides ≅, then the quad. is a . If a quadrilateral’s diagonals bisect each other, then the quad. is a . If a quadrilateral has 2Coordinate Quadrilaterals INB Pages. Instead of teaching coordinate quadrilaterals throughout the quadrilaterals unit, like I normally do, I taught it all together. It worked. I don’t know if it was better or worse than doing it throughout. The first day, I only taught about proving a quadrilateral is a parallelogram.How to frame the conversation so it won't ruin their opinion of you. No matter how hard you try to manage your time, you will probably end up being late on an assignment at some po...Match all the terms with their definitions as fast as you can. Avoid wrong matches, they add extra time! Start game. Quizlet has study tools to help you learn anything. Improve your grades and reach your goals with flashcards, practice …To prove a parallelogram is a square, we need to show either one of the following: It is a rhombus (all four sides of equal length) with interior angles equal to \(90°\). It is a rectangle (interior angles equal to \(90°\)). Trapezium (EMA64) Trapezium. A trapezium is a quadrilateral with one pair of opposite sides parallel.A parallelogram is defined as a quadrilateral with two opposite pairs of sides are parallel. We have said (and proven) that parallelograms have four basic properties: We will now show that the converse is true - that if one of these properties holds, the quadrilateral is a parallelogram. We will start with a fifth converse theorem - that if a ...Quadrilaterals, parallelograms, rhombuses, rectangles, squares, trapezoids, isosceles trapezoids Learn with flashcards, games, and more — for free.It is a quadrilateral where both pairs of opposite sides are parallel. There are six important properties of parallelograms to know: Opposite sides are congruent (AB = DC). Opposite angels are congruent (D = B). Consecutive angles are supplementary (A + D = 180°). If one angle is right, then all angles are right.Match all the terms with their definitions as fast as you can. Avoid wrong matches, they add extra time! Start game. Quizlet has study tools to help you learn anything. Improve your grades and reach your goals with flashcards, practice …6.3 Proving Quadrilaterals are Parallelograms Geometry Mrs. Spitz Spring 2005. Objectives: • Prove that a quadrilateral is a parallelogram. • Use coordinate geometry with parallelograms. Assignment • pp. 342-343 #1-19, 25, 26, 29. Theorem 6.6: If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a …Do you want to practice solving problems involving quadrilaterals on the coordinate plane? Khan Academy offers you a series of examples and exercises to help you master this topic. You will learn how to identify, classify, and draw different types of quadrilaterals, such as rectangles, parallelograms, and trapezoids, using coordinates and formulas. You will …Test your knowledge of proving quadrilaterals are parallelograms with Quizlet flashcards. Learn theorems, definitions and proofs with examples.To find the area of a quadrilateral, find the height and width of the shape (for rectangles, squares, parallelograms and trapezoids), and then multiply the two numbers together. Fo...In this lesson we go through properties of parallelograms and prove theorems relating to determining whether a given quadrilateral is a parallelogram. We go ...It is a quadrilateral where both pairs of opposite sides are parallel. There are six important properties of parallelograms to know: Opposite sides are congruent (AB = DC). Opposite angels are congruent (D = B). Consecutive angles are supplementary (A + D = 180°). If one angle is right, then all angles are right.A rectangle is a quadrilateral that has four sides. In a rectangle, the opposite sides are of equal length and also parallel. Because of this, a rectangle is also a parallelogram. ...Learn how to prove that a quadrilateral with given vertices is a parallelogram and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.Space. annnakaa. Start studying Proving a Quadrilateral is parallelogram. Learn vocabulary, terms, and more with flashcards, games, and other study tools.In quadrilateral BLOT, BL Il TO, mZBTO 800 , and = 100 100' In quadrilateral JOKE, , mZOJE = 650 , and mZJEK In quadrilateral SLOW, LO ow sw . A - ore. çidxs In quadrilateral MOAT, MA intersects OT at R, MR and TR . In quadrilateral CRAB, mZRCB = 600 mZCBA=1200, and mZCRA= 1200 B Show that the following figure is a … Proving a Quadrilateral Is a Parallelogram - Assignment. 9 terms. diamondstarkes634. Preview. ... Which concept is used to prove that the opposite sides of a ... This self-grading digital assignment provides students with practice applying theorems associated with parallelograms, including: If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram. If an angle of a quadrilateral is supplementary to both of its consecutive angles, then the quadrilateral ...N L O M. (Sample answer) You can prove that a quadrilateral is a parallelogram if any of these conditions apply: both pairs of opposite angles are congruent, both pairs of opposite sides are congruent, the diagonals bisect each other, or one pair of opposite sides is both parallel and congruent.Proving a Quadrilateral is a Parallelogram. 1. Multiple Choice. State which method we can use to show that the quadrilateral is a parallelogram. Both pairs of opposite angles are congruent. Both pairs of opposite sides are congruent. Both pairs of diagonals bisect each other. Both pairs of opposite sides are parallel.May 21, 2013 · By the definition of a parallelogram, opposite sides are parallel, so the trays of the sewing box are always parallel. Ex. 2: Proving Quadrilaterals are Parallelograms. Another Theorem ~ • Theorem 6.10—If one pair of opposite sides of a quadrilateral are congruent and parallel, then the quadrilateral is a parallelogram. Proving That a Quadrilateral is a Parallelogram. Proving That a Quadrilateral is a Parallelogram. Chapter 6 Section 3. Objective. Students will determine whether a quadrilateral is a parallelogram. Parallelogram. You can decide whether a quadrilateral is a parallelogram if its sides, angles, and diagonals have certain …This video provides the student with a walkthrough of one or more examples from the concept "Proving a Quadrilateral is a Parallelogram". Click Create Assignment to assign this modality to your LMS.Which of the following conditions is a quadrilateral proves it is a parallelogram? A. One pair of opposite sides are congruent. B. One angle is supplementary to both consecutive angles.Proving that a Quadrilateral Is a Parallelogram. Get a hint. Theorem 6-8. Click the card to flip 👆. If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram. Click the card to flip 👆. 1 / 5.In quadrilateral WXYZ, WC = 2x + 5 and CY = 3x + 2. What must x equal for quadrilateral WXYZ to be a parallelogram?Proving Quadrilateral is a parallelogram (Different Theorem) Deleted for CBSE Board 2024 Exams. Previous topics →. Chapter 8 Class 9 ... Proving a Quadrilateral is a Parallelogram. 1. Multiple Choice. State which method we can use to show that the quadrilateral is a parallelogram. Both pairs of opposite angles are congruent. Both pairs of opposite sides are congruent. Both pairs of diagonals bisect each other. Both pairs of opposite sides are parallel. GEOM A, U7L3: Proving That a Quadrilateral Is a Parallelogram. 10 terms. maybeishouldgolol. Preview. Molecular Geometry and bond angles. 15 terms. ChupaMakabra__ Preview. Geometry Lesson 5 Study. ... If a quadrilateral is a parallelogram, then its opposite sides are congruent. Theorem 6-4. If a quadrilateral is …A convex polygon that is both equilateral and equiangular. The sum of the measures of the exterior angles of a convex polygon, one angle at each vertex, is 360°. A quadrilateral with both pair of opposite parallel sides. If a quadrilateral is a parallelogram, then its opposite sides are congruent. Study with Quizlet and memorize flashcards containing terms like List the following methods that COULD(Might) Be used to prove a quadrilateral is a parallelogram., Show examples when you prove a quadrilateral is a parallelogram with the below method: If both pairs of opposite sides of a quadrilateral are parallel, then the quadrilateral is a parallelogram. (reverse definition), Show examples ... so that BHFC B H F C is cyclic. . Line (4) ( 4) depends upon A A, H H, F F, D D appearing in that order on their circle. Adjusting the argument for the order A A, F F, H H, D D (with which ∠AHF = β ∠ A H F = β) is left as an exercise to the reader. (There should be an argument that neatly avoids such case-work, but I haven't found it.)Proving a Quadrilateral is a Parallelogram. 1. Multiple Choice. State which method we can use to show that the quadrilateral is a parallelogram. Both pairs of opposite angles are congruent. Both pairs of opposite sides are congruent. Both pairs of diagonals bisect each other. Both pairs of opposite sides are parallel."Glencoe Geometry - Lesson 9-1: Circles and Circumference, Lesson 9-2: Measuring Angles and Arcs, Lesson 9-3: Arcs and Chords, Lesson 9-4: Inscribed Angles, and Lesson 9-5: Tangents: Key Concept Boxes"Learn how to prove that a quadrilateral with given vertices is a parallelogram and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.Feb 24, 2012 · Prove a quadrilateral is a parallelogram. Click Create Assignment to assign this modality to your LMS. We have a new and improved read on this topic. Draw a picture of each quadrilateral, to determine if it is a parallelogram by one of the following reasons. Be able to explain your selection. Opposite sides congruent. Opposite angles congruent. Diagonals bisect each other. One pair of opposite sides is both parallel and congruent. Both pairs of opposite sides are parallel. 22) In ...Proving That a Quadrilateral is a Parallelogram. Proving That a Quadrilateral is a Parallelogram. Chapter 6 Section 3. Objective. Students will determine whether a quadrilateral is a parallelogram. Parallelogram. You can decide whether a quadrilateral is a parallelogram if its sides, angles, and diagonals have certain …Theorem: If a quadrilateral is a parallelogram, then its opposite sides are congruent. If a quadrilateral is a parallelogram, then its diagonals bisect each other. If a quadrilateral is …

Proving that a Quadrilateral Is a Parallelogram. Get a hint. Theorem 6-8. Click the card to flip 👆. If both pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram. Click the card to flip 👆. 1 / 5.. Doordash deactivated my account with money in it

proving a quadrilateral is a parallelogram assignment

Learn how to prove a quadrilateral is a parallelogram with Quizlet flashcards. Test your knowledge with interactive questions and answers.6-3 Practice Proving That A Quadrilateral Is A Parallelogram Lisbdnet ∠ZWY ≅ ∠XWY by the corresponding ∠s theorem. In the video below: - We will use the properties of parallelograms to determine if we have enough information to prove a given quadrilateral is a parallelogram.Tip: To get a feel for why this proof method works, take two toothpicks and two pens or pencils of the same length and put them all together tip-to-tip; create a closed figure, with the toothpicks opposite each other. The only shape you can make is a parallelogram. If both pairs of opposite angles of a quadrilateral are congruent, then it’s a ...• identify quadrilaterals that are parallelograms • determine the conditions that guarantee a quadrilateral a parallelogram • use properties to find measures of angles, sides and other quantities involving parallelograms • prove theorems on the different kinds of parallelogram (rectangle, rhombus, square) • prove the Midline TheoremThis video provides the student with a walkthrough on proving that a quadrilateral is a parallelogram. Click Create Assignment to assign this modality to your LMS. We have a new and improved read on this topic.Sep 4, 2021 ... Acuvo Practice proving that a quadrilateral is a parallelogram. Quadrilateral WXYZ, WC = 2x + and CY = 3x + 2. What must x equal for ...Prove a Parallelogram is a square. 1. If a parallelogram is both a rectangle and a rhombus. Prove Quadrilateral is a kite. 1. Two disjoint pairs of consecutive sides of a quadrilateral congruent. 2. If one of the diagonals of a quadrilateral is perpendicular bisector of the other diagonal. Prove a quadrilateral is a trapezoid.Draw a picture of each quadrilateral, to determine if it is a parallelogram by one of the following reasons. Be able to explain your selection. Opposite sides congruent. Opposite angles congruent. Diagonals bisect each other. One pair of opposite sides is both parallel and congruent. Both pairs of opposite sides are parallel. 22) In ...Quizlet has study tools to help you learn anything. Improve your grades and reach your goals with flashcards, practice tests and expert-written solutions today.no we can not prove it is a parallelogram. yes, one pair of sides are congruent and parallel. yes, opposite sides are parallel. yes, diagonals bisect each other. 2. Multiple Choice. 45 seconds. 1 pt. Which of the following cannot be used to prove a shape is a parallelogram?Finally, you'll learn how to complete the associated 2 column-proofs. Proving a Quadrilateral Is a Parallelogram - Assignment Flashcards. Based on the given information, which statement best explains whether the quadrilateral is a parallelogram? A 4500 B 8000 C 8500 D She should return to teaching regardless of her salary.N L O M. (Sample answer) You can prove that a quadrilateral is a parallelogram if any of these conditions apply: both pairs of opposite angles are congruent, both pairs of opposite sides are congruent, the diagonals bisect each other, or one pair of opposite sides is both parallel and congruent.Final answer: The figure could be a parallelogram if: One pair of opposite sides measures 10 in, and the other pair measures 13 in (Option 1) and One pair of o… Proving a Quadrilateral Is a Parallelogram Assignment Active Determining Whether a Figure Is a - brainly.comGiven: quadrilateral MNOL with MN ≅ LO and ML ≅ NO. 3 Prove a quadrilateral is a parallelogram Independent Practice Ch. In addition, we may determine that both pairs of opposite sides are parallel, and once again, we have shown the quadrilateral to be a parallelogram.It is a quadrilateral where both pairs of opposite sides are parallel. There are six important properties of parallelograms to know: Opposite sides are congruent (AB = DC). Opposite angels are congruent (D = B). Consecutive angles are supplementary (A + D = 180°). If one angle is right, then all angles are right.Producing the daily news is a challenge in any medium, and when you’re dealing with live television, the complications are endless. How do TV news stations find their stories and d...2: The parallelogram is a rectangle if and only if the two diagonals of the quadrilateral have equal length, that is, if the quadrilateral is an equidiagonal quadrilateral. Reference for those two theorems. 3 (Hint): When the quadrilateral is both a rectangle and a rhombus, then it is a square. So, ..The Square. the little squares in each corner mean "right angle". A square has equal sides (marked "s") and every angle is a right angle (90°) Also opposite sides are parallel. A square also fits the definition of a rectangle (all angles are 90°), and a rhombus (all sides are equal length)..

Popular Topics