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# Angles in Geometry – CBSE Maths Lesson for Class V

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Angles consist of 2 arms and a vertex.
It is the degree measure between 2 arms having a common vertex.

Types of Angles Acute Angle Obtuse Angle Right Angle Straight Angle Reflex Angle Complete Angle

1. Acute Angle

An Angle whose measure is between Zero degree & 90 degree is called acute angle.

2. Obtuse Angle

An Angle whose measure is between 90 degree & 180 degree is called obtuse angle.

3. Right Angle

An Angle whose measure is between 90 degree.

4. Straight Angle

An Angle whose measure is exactly 180 degree.

5. Reflex Angle

An Angle whose measure is greater than 180 degree but less than 360 degree.

6. Complete Angle

An Angle whose measure is 360 degree.

Complementary Angles

Pair of Angles whose sum is 90 degree.

Supplementary Angles

Pair of Angles whose sum is 180 degree.

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