Question

what is the measure of each angle in a pair of vertical angles if one of them is 45 degrees?
a. 135 degrees
b. 90 degrees
c. 180 degrees
d. 45 degrees

Explanation:

Step1: Recall vertical - angle property

Vertical angles are equal.

Step2: Identify given angle

One angle is 45 degrees.

Step3: Determine the other angle

Since vertical angles are equal, the other angle is also 45 degrees.

Answer:

D. 45 degrees