# Quadrilateral proofs pdf

*2019-11-14 07:00*

11 Day 2 Ways to prove a quadrilateral is a parallelogram Warm Up Statements Reasons 1. 1. Given 2. 2. (S)7. 9Proving a Quadrilateral is a Rhombus, Rectangle, or a Square 7. 9 Day 1 Warm Up For each figure, tell if there is enough information to prove that the quadrilateral is a parallelogram. If so, give the theorem or definition. quadrilateral proofs pdf

Show the diagonals of the quadrilateral bisect each other. Show one set of opposite sides of the quadrilateral is both congruent and parallel. Show one set of opposite sides of the quadrilateral

Proving That a Quadrilateral is a Rectangle One can prove that a quadrilateral is a rectangle by first showing that it is a parallelogram and then using either of the following methods to complete the proof. I think it is important to ask students to justify over and over again in this unit it helps them with their work on quadrilateral proofs and, by frequently writing and speaking the justifications, also helps them to remember the different features of all the different quadrilaterals. **quadrilateral proofs pdf** 2 Day 1 Using Coordinate Geometry To Prove Right Triangles and Parallelograms Proving a triangle is a right triangle Method 1: Show two sides of the triangle are perpendicular by demonstrating their slopes are opposite reciprocals. Method 2: Calculate the distances of all three sides and then test the Pythagoreans theorem to show the three lengths make the Pythagoreans theorem true.

Geometry Congruence G. CO. 10 Prove Theorems about triangles The sum of the measures of the interior angles of a triangle is 180. The base angles of an isosceles triangle are congruent. *quadrilateral proofs pdf* Geometry Notes Name: Proofs of Quadrilateral Properties Definitions: A figure is a Parallelogram, IFF it is a quadrilateral with two sets of opposite, parallel sides. A figure is a Rectangle IFF it is a quadrilateral with four right angles. A figure is a Rhombus IFF it is a quadrilateral with four congruent sides. A figure is a Square IFF it is a quadrilateral with four congruent sides