Angle is discussed here in details. In our daily life we come across different objects having two arms hinged at a point. For example, hands of a clock, two arms of a divider, and two sharp edges of a scissors are all hinged at a point and thus are inclined to each other. This inclination between two arms is known as angle.

When two rays have a common end point they from an angle. In this figure
two rays OA and OB have a common end point O. So they form an angle
AOB. The common end point is called the **Vertex** and rays OA and OB are the **arms** of the angle.

In the above figure, AOB is angle whose two arms are the rays OB and OA. The symbol for an angle is < and angle AOB can be written as <AOB. Every angle has a measure. The unit of measurement of an angle is degree (°). In a figure the measure of an angle is generally written between the arms of the angle, close to the vertex.

**Always remember, while naming the angle, the vertex is always in the centre.**

The figure formed by two rays with the same initial point is called an * angle*.

**● ****Angle.**

**Interior and Exterior of an Angle.**

**Measuring an Angle by a Protractor.**

**Construction of Angles by using Compass.**

**Geometry Practice Test on angles.**

**5th Grade Math Problems** **From Angle**** to HOME PAGE**

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