Class 5 (CBSE) • MathematicsChapter 3: Angles as Turns⭐ Topic 1
Angles as Turns
We understand angles as a measure of turning, like turning a full circle, half a circle, or a quarter turn.
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A full turn (all the way around) is 360 degrees. A half turn is 180 degrees, and a quarter turn is 90 degrees (also called a right angle).
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Remember these!
- A full turn is 360 degrees.
- A half turn is 180 degrees.
- A quarter turn is 90 degrees (a right angle).
- Angles smaller than 90 degrees are acute.
- Angles exactly 90 degrees are right angles.
- Angles between 90 and 180 degrees are obtuse.
- We see angle turns in doors, clocks, and directions.
- Understanding turns connects angles to real movement.
Words to know
angles as turns