In triangle △XYZ, suppose you want to prove that ∠Y is not t...

Question

In triangle △XYZ, suppose you want to prove that ∠Y is not the smallest angle.
Which of the following is the correct first step in an indirect proof?

A

Assume ∠Y is the largest angle.

B

Assume ∠Y is equal to another angle.

C

Assume ∠Y is the smallest angle.

D

Assume ∠Y is not the largest angle.

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