Question

An angle with a measure of _______ is formed by two opposite rays.

A. 90°
B. 180°
C. 270°
D. 360°

Answer 1

an angle with a measure of 180 degrees is formed by two opposite rays.

Answer 2

An angle with a measure of 180° is formed by two opposite rays.

Solution-

As shown in the attachment, AB and CD are two opposite rays. when they meet the form a straight line. And the measurement of a straight angle is 180° or π rad.

∴ Therefore, when two opposite rays meet, the measurement of angle formed between them is 180°.