NCERT Solutions for Class 5th Maths Chapter 3 Angles arise in situations that involve a turn — In-text Questions
Book page 34 Updated on2026-09-19
Q1.
I made two quarter turns. I wonder what it is called?
Answer
It is a half turn, and the angle it makes is called a straight angle.
1/4 turn + 1/4 turn = 2/4 turn = 1/2 turn The two arms now lie in one straight line So the angle is a straight angle
Two quarter turns make a half turn. The two arms make one straight line — a straight angle.
Why it happens: A quarter turn makes a square corner — a right angle. Do it again and you have gone half way round the circle. The arm has swung from pointing one way to pointing exactly the opposite way, so both arms now lie flat in a single straight line.
Tip: Two right angles make one straight angle. That is worth remembering for the rest of the chapter.