Definitions [3]
Definition: Interior of an Angle
The interior of an angle is defined as the region or planar area that lies between the two rays (or "arms") that form the angle.
Definition: Exterior of an Angle
The interior of an angle is the region or planar area that lies between the two rays (or arms) that form the angle.
Rule
The sum of all angles formed at a single point is always 360°.
