2 rays
An angle is the union of two rays with a common endpoint.
NO
The answer would be an angle.
An angle separates a plane to 3 sets: 1) Points between the 2 rays 2) Points on one of the rays 3) Points outside of the 2 rays
Two rays that have the same endpoint form an angle.
vertex
It is an angle.
An angle is formed by two rays with a common endpoint.
An angle is formed when two rays meet.
angle
Angle