Question

Given that triangle PQR congruent triangle STU, , what is the measure of angle U ?

Answer 1

Answer: B or 52 degrees...

Explanation:

Congruent means to have identical properties and because triangle PQR is congruent to triangle STU, their angles are also congruent.

In the theorem AAA, angle P is congruent to S, angle Q is congruent to T and angle R is congruent to U.

The sum of the angles in a triangle is 180 degrees and so you would do 180-86-42 which would get you to 52 degrees and that is the answer.

Answer 2

B. 52

Because every triangles angles equal up 180°
And all you really gotta do is add up the two angles shown 86° + 42° and you get 128°
Then you subtract that from 180°
180° - 128°
and you get 52°