At a point/vertex.
I am the endpoint where two sides of a polygon meet?
It's true, an angle is made up of two rays. Two rays meet at a point, and their relative position at the point where they meet will define an angle.
No. If the rays do not meet, there is no angle.
An angle.
Vertex.
Only if they meet.
Perpendicular rays are two or more rays( part of a line that in one direction continues on) that meet at a right angle and will never meet again.
An angle is formed when two rays meet.
the vertex
An angle
the vertex of the angle
the vertex :)