Find the measure of angle b
b/50

130°

Step-by-step explanation:

Angles in a straight line are supplementary to each other. Those angles are also called as Linear Pairs. Here , b & 50° are linear pairs.

So ,

b + 50° = 180°

=> b = 180° - 50°

=> b = 130°

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.