Question

△ABC has interior angles with measures x°, 100°, and 70°, and △DEF has interior angles with measures y°, 70°, and 50°.

Answer 1

Hey there! :D

We know that the triangles are not similar. If they were, they would have the same angles. The interior angles are not congruent. We can rule out choice "B" and "C". 

Just because they have one equal angle does not make them similar. We can rule out "D".

"A" is the best answer. 

I hope this helps!
~kaikers

Answer 2

It could be either the first statement or the third.