top of page
Geometry worksheet to help students analyze the use of congruent triangles to prove relationships about sides and diagonals in parallelograms and rhombuses.
Geometry worksheet to help students use congruent triangles to prove relationships about diagonals in rhombuses, rectangles, and isosceles trapezoids.

Activity 3.8​

​Assignment 5.21

​Quadrilateral Theorems

 
Objective
Use congruent triangles to prove side and diagonal relationships in parallelograms, rectangles, rhombuses, and isosceles trapezoids.
 
 
​​Previous

Assignment 3.9

End of Unit

About Geometry Worksheet Assignment 5.21:     

 

Assignment 5.21 is an introduction to proof of theorems about pairs of congruent sides and diagonals of quadrilaterals.

 

Prerequisite Skill:  Use CPCTC to prove that pairs of sides of congruent triangles congruent (Assignment 5.20).  

 

 

 

 

bottom of page