Angles and Angle Pairs :
Easily as significant as rays and line segments are the angles they form. Without them, there would be none of the geometric figures that you know (with the possible exception of the circle).
Angles
Two rays that have the same endpoint form an angle. That endpoint is called the vertex, and the rays are called the sides of the angle. In geometry, an angle is measured in degrees
from 0° to 180°. The number of degrees indicates the size of the angle. In Figure 1 , rays AB and AC form the angle. A is the vertex.
and 
are the sides of the angle.
Figure 1
∠BAC.
I hope the above explanation was helpful.
Easily as significant as rays and line segments are the angles they form. Without them, there would be none of the geometric figures that you know (with the possible exception of the circle).
Angles
Two rays that have the same endpoint form an angle. That endpoint is called the vertex, and the rays are called the sides of the angle. In geometry, an angle is measured in degrees
from 0° to 180°. The number of degrees indicates the size of the angle. In Figure 1 , rays AB and AC form the angle. A is the vertex.
and are the sides of the angle.
Figure 1 ∠BAC.
I hope the above explanation was helpful.
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