△ABC has interior angles with measures x°, 90°, and 70°, and △DEF has interior angles with measures y°, 70°, and 20°. Using the given information, which statement is true?
a The triangles are similar because they each have an interior angle with a measure 70°.
b The two triangles are not similar because the interior angles are congruent but
the side lengths are different.
c The two triangles are similar because y=90 .
d The two triangles are not similar because x≠y .