Question

1/2 a of revolution=2 right angle​

Answer 1

True

Angle of one revolution = 360°

A right angle = 90°

$= > \frac{1}{2} of \: \: revolution \: = 180$

$= > 2right \: \: angles = 180$

L.H.S. = R.H.S.

Hence, proved.

Hope this answer helps you ^_^ !

Answer 2

Answer:

The hands of a clock makes two right angles in 1/2 of a revolution, one right angle in 1/4 of a revolution and three right angles in 3/4 of a revolution. of revolution, clockwise, i.e. three right angles, it reaches at 2.