Yes, numerous rays can have the same point.
Two rays starting at the same point of origin form an angle
When two rays start from the same point, they form an angle. The point where the rays originate is called the vertex, and the rays themselves are referred to as the sides of the angle. The measure of the angle is determined by the amount of rotation from one ray to the other.
An angle is formed when two rays begin at a common point. The common point is called the vertex of the angle.
Yes. Any two rays which have the same end point.
an angle
Angle
An angle
Angle
angle
a rainbow 
Concurrent
Yes, opposite rays are two rays that share the same endpoint and extend in opposite directions. This means they form a straight line together, with the common endpoint acting as the starting point for both rays. Essentially, if you have a point O and two rays OA and OB, they are opposite rays if A and B are on opposite sides of O.