Samantha measured two of the angles in pqr and found that they had measures of 65° and 70°. then, she measured two of the angles in xyz and found that they had measures of 65° and 45°. what statement best describes the two triangles?

The two triangles are similar.

The angles of a triangle sum to 180°.  Using the known angles in the first triangle, we find the missing angle measure:
180-(65+70) = 180-135 = 45

We do the same for the second triangle:
180-(65+45) = 180 - 110 = 70

Any two triangles that have all 3 angles congruent is similar by AAA.

Ais the answer for your question