Triangles équilatéraux
Author: Patrice Debart

B = (0, 0)
C = (6, 0)
A = Rotate(C, 59.99999999999999°, B)
t, AB, BC, AC = Polygon(A, B, C)
G = Centroid(Polygon[A, B, C])
D = Point(BC)
E = Rotate(D, 59.99999999999999°, B)
F = Rotate(D, 300.00000000000006°, C)
DE = Segment(D, E)
DF = Segment(D, F)
I = Centroid(Polygon[B, D, E])
J = Centroid(Polygon[C, D, F])
A' = Mirror(A, BC)
H = Mirror(G, BC)
BG = Segment(B, G)
CG = Segment(C, G)
BA' = Segment(B, A')
CA' = Segment(C, A')
IJ = Segment(I, J)
JH = Segment(J, H)
HI = Segment(H, I)