The point at which the rays of an angle intersect is the vertex.
the vertex
Two rays that intersect with a common endpoint form an angle. The common endpoint is known as the vertex of the angle, while the other points on each ray extend infinitely in opposite directions. For example, the rays AB and AC can intersect at point A, creating angle BAC.
Rays that are not parallel do not necessarily intersect. Rays have a starting point and if they diverge, they will not intersect. If they converge from their starting point, then they will eventually intersect.
two lines intersect at point b which is also end point of two rays
Rays, I believe.
as long as they intersect.
Yes
Not necessarily. The rays may not intersect.
Two collinear rays that do not intersect are called parallel rays. This will only occur for a short time, however, because they will intersect at some point.
any rays that intersect will form 4 angles
The arcs must intersect because you need a point to use with the point of the angle's vertex to make the line that intersects the angle.
The angle between two planes when the planes intersect at a point is the acute angle fixed by the normal vectors of the planes.