a = 0.45 (slider from 0.2 to 4, step 0.05)
f(x) = a^(x)
A = (0, 1)

Tool: triang_equil
Input: A, B
Output: poli1

c = Circle(A, B)
d = Circle(B, A)
C, D = Intersect(c, d)
poli1, b, c_1, a = Polygon(C, A, B)