Question

Given angles COA and COB such that OA and OB from opposite rays, then COA + COB is

(1) 45°
(2) 90°
(3) 180°
(4) 360°​

Answer 1

Answer:

180°.

Step-by-step explanation:

Since OA and OB are opposite rays. Therefore, AB is a line. Since, OC stands on line AB. Thus, ∠COA and ∠COB form a linear pair, therefore, their sum must be equal to 180°.