Update 696-math-intersect.markdown

Author: Joe7M

_build/reference/696-math-intersect.markdown

@@ -6,10 +6,36 @@ Calculates the intersection of the two line segments A-B and C-D. Returns: Rx,Ry
 
 type = cross-type:
 
-- 0 No cross (R = external cross)
-- 1 One cross
-- 2 Parallel
-- 3 Parallel (many crosses)
-- 4 The cross is one of the line segments edges.
+- 0: No cross (R = external cross)
+- 1: One cross
+- 2: Parallel
+- 3: Parallel (many crosses)
+- 4: The cross is one of the line segments edges.
 
+```
+'Line segment AB
+Ax = 50
+Ay = 50
+Bx = 100
+By = 100
 
+'Line segment CD
+Cx = 100
+Cy =  50
+Dx =  50
+Dy = 100
+
+type = 0
+Rx = 0
+Ry = 0
+
+intersect Ax, Ay, Bx, By, Cx, Cy, Dx, Dy, type, Rx, Ry
+
+print "Intersection at x = "; Rx; ", y = "; Ry
+
+' Draw lines and a circle at the calculated crossing point
+line Ax, Ay, Bx, By color 5
+line Cx, Cy, Dx, Dy color 8
+circle Rx,Ry, 5 color 12
+
+```