Question

2. Prove that If a ray stands on a line, then the sum of
the two adjacent angles, so formed is 180° ​

Answer 1

Step-by-step explanation:

When a ray stands on a line, two adjacent angles are formed. We know that the angle lying on a straight line is 180°. The two angles being adjacent, make a total angle of 180° on the straight line. Another way, we can see since the ray stands on the straight line, we can consider it is a perpendicular line.

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