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Geometry worksheet to help students write contradictions, assumptions, and complete and write indirect proofs using congruent triangles.
Geometry worksheet to help students complete and write indirect proofs using congruent triangles.

Activity 3.8​

​Assignment 5.18

​Indirect Proof

 
Objectives
Write contradictions of statements.
 
Complete indirect proofs.
 
 
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Assignment 3.9

About Geometry Worksheet Assignment 5.18:     

 

Assignment 5.18 is an introduction to indirect proof.

 

Prerequisite Skills:  Use congruent triangles and CPCTC to prove pairs of sides and angles of triangles congruent (Assignment 5.17).

 

Definition:  An indirect proof is proof in which the contradiction of a conclusion is assumed to be true and is shown to result logically in a contradiction pf a given

                        premise.

 

 

 

 

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