
Directions: Prepare a formal proof for each problem. Some problems specify a method, while other leave the choice of method up to you. While more than one method of proof, or presentation, is possible, only one possible answer will be shown for each question.
1. 
Given: Δ ABC and Δ DEF as marked at the right. Assume is horizontal and is vertical.
Prove: Using rigid motions, that Δ ABC Δ DEF.



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9. 
Prove using a Flowchart Proof.



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