Question

A right angle is a half of straight line

Answer 1

Since, the angle on straight line is 180° , therefore a right angle is a half of straight line as right angle = 90°....... Hence the statement is true.

Answer 2

a right angle is half of the straight angle

right angle =90 degrees

straight angle =180degree

therfore right angle = 90 = 180/2= straight angle/2
= half of straight angle