Centre del triangle inscrit és el punt O

A = (0, -1)
B = (8, -1)
a = Segment(A, B)
b = 4
c = Circle(A, b)
d = 7
e = Circle(B, d)
C_1, C = Intersect(e, c)
f = Segment(A, C)
g = Segment(C, B)
h = AngularBisector(B, A, C)
i = AngularBisector(A, C, B)
O = Intersect(i, h)