Question

f the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x + 10) degrees, what is the value of x?

2 lines intersect to form 4 angles. From top left, clockwise, the angles are 1, 4, 3, 2.
50
55
60
100

Answer 1

Angle 1 and angle 3 are vertical angles, so they are equal.
Set 2x + 10 = 110 → 2x = 100 → x = 50.