Question

Lines /1 and /2 are parallel and are cut by a transversal, line /3. Line /4 is perpendicular to /3. A 120° angle is shown in the diagram below. What is the measure of angle x?

A. 30°
B 60°
C 90°
D 120°

Answer 1

30°

Explanation:

in the right angle triangle

60°+90°+x=180°

x=30°

the 60° came from the external angle is 120° as it is corresponding angle to the given 120°