Triángulos imposibles
Author: Departamento de Matemática, Colegio Seminario.

a = 1 (slider from 0 to 20, step 0.1)
b = 4.6 (slider from 0 to 20, step 0.1)
c = 1.4 (slider from 0 to 20, step 0.1)
A = (0.42, 1.54)
d: y = y(A)
e = Circle(A, b / 2)
B, C = Intersect(e, d)
f = Circle(B, a)
g = Circle(C, c)
h = Segment(B, C)
D = Point(f)
E = Point(g)
i = Segment(D, B)
j = Segment(E, C)
k = Circumference(f)
l = Distance(i, h)
m = Circumference(g)