find the pedal triangle of a point with respect to a triangle
PedalTriangle(pT, P, T, n)
the PedalTriangle triangle to be created
(optional) list of three names denoting the names of three vertices of the pedal triangle
The pedal triangle pT of point P with respect to triangle T is the triangle formed by the feet of the perpendiculars drawn from point P to the sides of T (or their extensions).
If the optional argument is given and is a list of three names, these three names will be assigned to the three vertices of the pedal triangle pT
For a detailed description of the pedal triangle pT, use the routine detail (i.e., detail(pT))
Note that the routine only works if the vertices of triangle T are known.
The command with(geometry,PedalTriangle) allows the use of the abbreviated form of this command.
name of the objectpTform of the objecttriangle2dmethod to define the trianglepointsthe three vertices1,3,85,245,4,0
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