1.

If a ray stands on a line then the sum of the adjacent angle so formed is ???

Answer»

The answer is given below :

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.

Thus, the two adjacent angles are RIGHT angles.

So, the total angle

= 90° + 90°

= 180°

(Referred to the given attachment.)

Thank you for your question.



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