SWBAT: Prove that a Quadrilateral is a Rhombus or a Square Lesson 7A-3 Do Now: 1. In a coordinate plane, describe how we prove a quadrilateral is a parallelogram. 2. In a coordinate plane, describe how we prove a quadrilateral is a rectangle. 3. SWBAT: Prove that a Quadrilateral is a Rhombus or a Square Lesson 7A-3 Proving a Quadrilateral is a Rhombus Method: FIRST PROVE A PARALLELOGRAM THEN P rove that the diagonals form right angles Example 1: Prove that a quadrilateral with the vertices J(-1,3), U(3,6), M(8,6) and P(4,3) is a rhombus. SWBAT: Prove that a Quadrilateral is a Rhombus or a Square Lesson 7A-3 Proving that a Quadrilateral is a Square Method: FIRST PROVE A PARALLELOGRAM then prove rectangle, then prove the diagonals form right angles. Example 2: Prove that the quadrilateral with vertices S(-1,0), L(3,3), O(6,-1) and W(2,-4) is a square. SWBAT: Prove that a Quadrilateral is a Rhombus or a Square Lesson 7A-3 LESSON PRACTICE SWBAT: Prove that a Quadrilateral is a Rhombus or a Square Lesson 7A-3 LESSON PRACTICE SWBAT: Prove that a Quadrilateral is a Rhombus or a Square Lesson 7A-3 LESSON PRACTICE
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