Question

Which reason justifies Statement 5?

A) Substitution
B) Reflexive Property
C) Symmetric Property
D) Associative Property

Answer 1

My other answer was deleted, but yes, it should be A, substitution.

Answer 2

The answer is A. Substitution

Explanation:

Looking at the previous proofs, you can see that:

∠Y≅∠4

∠Z≅∠6

∠X + ∠4 + ∠6 = 180°

Statement 5 then replaces ∠4 and ∠6 with ∠Y and ∠Z, respectively. Replacing it means that it was substituted with the GIVEN values by the previous statements.

The best answer is the Substitution.