a line
Line
angle
an angle
The common endpoint of 2 rays that form an angle is the vertex.
Opposite rays are rays that share the same endpoint (have a common endpoint), but they also form a line.Not always.
An angle.
-- Two rays with a common endpoint form an angle. -- If they have a common endpoint, then they are collinear. So I guess, technically, the conditions described in the question aren't possible.
vertex
Angle
An angle is formed by two rays with a common endpoint.
What about them?These are known as opposite rays. They form a line.
Yes.