A = (-1.06, 2.09)
B = (-3.1, -1.33)
C = (1.36, -0.91)
t1, c, a, b = Polygon(A, B, C)
f = OrthogonalLine(A, a)
g = OrthogonalLine(B, b)
D = Intersect(f, g)
E = Intersect(g, b)
F = Intersect(f, a)
h = Segment(B, E)
i = Segment(A, F)