Interior Angles

An angle is the figure formed by two rays sharing a common endpoint, called the vertex of the angle. The magnitude of the angle is the "amount of rotation" that separates the two rays, and can be measured by considering the length of circular arc swept out when one ray is rotated about the vertex to coincide with the other.

Two angles are sometimes called congruent if there exists an isometry that transforms one of the angles into the other angle. We can specify an angle by using a point on each ray and the vertex.

An Interior Angle is an angle inside a shape.The interior angles of a triangle add upto 180°The measures of the interior angles in a polygon are consecutive integers.

Acute angles are angles whose measure is less than 90°

These are some types of angles in geometry.