The point of intersection of light rays which have been intentionally manipulated to come to a point of converge, as we do with a parabolic reflecting surface, is called the focus. The parabolic reflector will (by virtue of mathematical principles and the physics of light) redirect parallel incoming rays back off its surface to the focus of the parabola. Links are provided.
The point of intersection.
It is usually called an intersection or an intersection point.
The point of intersection of two sides of a polygon is called a vertex. A vertex describes the intersection or corners of a shape.
The point of intersection is called the break even point.
Point of concurrence
The point of intersection.
point of concurrency
The point of intersection of two sides of a polygon is called a vertex. A vertex describes the intersection or corners of a shape.
an intersection
The common point is called the intersection.
If the question refers to the axes of a graph, their intersection is called the "origin".
A Vertex is the point of intersection, and a Perpendicular Vertex is a vertex with all 90 degree angles, to be specific.