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Types of Angles
1. Acute Angle:An angle whose measure is less than 90° is called an acute angle.
2. Right Angle:An angle whose measure is 90° is called right angle.
3. Obtuse Angle:An angle whose measure is greater than 90° but less than 180° is called an obtuse angle.
4. Straight Angle:An angle whose measure is 180° is called a straight angle.
5. Reflex Angle:An angle whose measure is more than 180° but less than 360° is called a reflex angle.
6. Zero Angle:An angle measure 0° is called a zero angle.
5th Grade Geometry


