13.16.2 Checking if three points are collinear in the plane: is_collinear
See Section 14.13.6 for checking for collinearity in
three-dimensional geometry.
The is_collinear command determines whether or not three
points are collinear.
-
is_collinear takes three arguments:
A,B,C, three points.
- is_collinear(A,B,C) returns 1 if A,B
and C are collinear and returns 0 otherwise.
Examples.