Question

Find the measure of the marked angles.

(11x + 17) = ____.

(13x - 1) = ____.

Answer 1

(11x + 17) = 116°

(13x - 1) = 116°

Explanation:

(11x + 17) and (13x - 1) are equal because they are vertically opposite angles.

11x + 17 = 13x - 1

2x = 18

x = 9

Substitute x = 9 into angle measures.

11(9) + 17 = 116°

Since both angles are equal, (13x - 1) is also 116°.