7A-3 Prove Rhombus and Square

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. ​
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2. In a coordinate plane, describe how we prove a quadrilateral is a rectangle. ​
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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 ​
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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. ​
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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. ​
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Example 2: ​
Prove that the quadrilateral with vertices S(-1,0), L(3,3), O(6,-1) and W(2,-4) is a square. ​
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SWBAT: Prove that a Quadrilateral is a Rhombus or a Square
Lesson 7A-3
LESSON PRACTICE
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SWBAT: Prove that a Quadrilateral is a Rhombus or a Square
Lesson 7A-3
LESSON PRACTICE
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SWBAT: Prove that a Quadrilateral is a Rhombus or a Square
Lesson 7A-3
LESSON PRACTICE​ ​
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