An angle.
Angle
Yes.
what is a ray
Opposite Ray!
What about them?These are known as opposite rays. They form a line.
-- 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
Line
a line
Angle
an angle precisely defined as the common endpoint of two rays
Two rays that share an endpoint form an angle.
An angle is formed by two rays with a common endpoint.
Yes.
what is a ray
Opposite Ray!
What about them?These are known as opposite rays. They form a line.