Le\ plan\ rouge\ est\ parallèle\
à\ la\ base\ de\ la\ pyramide\ bleue.

Le

A = Intersect(xAxis, yAxis)
B = Point(xAxis)
C = (5, 3)
D = Point(yAxis)
poly1, a, b, c, d = Polygon(A, B, C, D)
S = (0, 0, 4)
e, faceABS, faceBCS, faceCDS, faceADS, arêteAS, arêteBS, arêteCS, arêteDS = Pyramid(poly1, S)
M = Point(arêteCS)
f: z = z(M)
poly2, E, F, G, H, g, h, i, j = IntersectPath(f, e)