How to Measure an Angle?
We use protractors to measure angles. Observe the figure given below which shows ∠AOB. Let us try and see if we can find out what type of angle is ∠AOB. Doesn't it look like an acute angle? This means that its measure is greater than 0° and less than 90°. Let us learn how to measure this angle using the protractor.
Important Notes on Angles
- 0°< Acute angle < 90°
- 90°< Obtuse angle < 180°
- 180° < Reflex angle < 360°
- A right angle is equal to 90°
- A straight angle is equal to 180°.
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