Answer to Question #7765 in Geometry for danielbelmiro

Question

I have two lines,
I need to calculate de intersect point of theses two lines.

Example:

line 1:
x: l1x1
y: l1y1
TO
x: l1x2
y: l1y2
and line 2 is:
x: l2x1
y: l2y1
TO
x: l2x2
y: l2y2



How to calculate the intersection point if exists?

I need to know for make a algorithm