13.16.12 Checking if two lines in the plane are perpendicular: is_perpendicular
See Section 14.13.4 for checking for perpendicularity in
three-dimensional geometry.
The is_perpendicular command determines whether or not two lines
are perpendicular.
-
is_perpendicular takes two arguments:
L1,L2, two lines.
- is_perpendicular(L1,L2) returns 1 if L1 and
L2 are perpendicular and otherwise returns 0.
Examples.
-
Input:
is_perpendicular(line(0,1+i),line(i,1))
Output:
- Input:
is_parallel(line(0,1+i),line(1+i,1))
Output: