How do I find the following answer to parts A and B?

Question

asked Jan 16, 2023 218k views

1 Answer

Pustovalov Dmitry · Answer 1 · 2023-01-22T00:05:14+0000

A) Given that both triangles are congruent, then:

AB ≅ ED

AC ≅ FD

BC ≅ EF

∠A ≅ ∠D

∠C ≅ ∠F

∠B ≅ ∠E

Then, option C cannot be true

B) ∠A + ∠B + ∠C = 180°

87° + 42° + 3y = 180° (∠B ≅ ∠E)

3y = 180° - 42° - 87°

3y = 51°

y = 51°/3

y = 17°