Two rays that share an endpoint form an angle.
An angle is formed by two rays with a common endpoint.
an angle precisely defined as the common endpoint of two rays
true
An angle consists of two rays called sides with a common endpoint called the vertex.
The common endpoint of 2 rays that form an angle is the vertex.
An angle.
Angle
Yes.
Two rays that share an endpoint form an angle.
An angle is the union of two rays with a common endpoint.
An angle is formed by two rays with a common endpoint.
a vertex
Yes.
what is a ray
-- 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.
an angle precisely defined as the common endpoint of two rays