vertex
Opposite rays are halves of a line. There is one endpoint and the two rays extend infinitely from it in opposite directions. The endpoint can actually be any point on the line, but it can be assumed to be the midpoint.
Two rays starting at a common point form an angle.
the vertex is the point where two rays begin and form and angle
all it is, is two rays in the same line that end with the same endpoint
It is called the point of intersection of the two rays. Not a word, but a phrase.
Two rays starting at the same point of origin form an angle
This is the focal point, the point of focus.
An angle is formed when two rays begin at a common point. The common point is called the vertex of the angle.
At a point/vertex.
Yes, an angle is composed of two rays with a common starting point.
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.
Intersection...?