A: (-2.28 + 0 * random(), -5.16)
B: (7.36 + 0 * random(), -5.16)
poly1, a, b, c, d, C, D = Polygon(A, B, 4)
e = Segment(D, C)
f = Segment(C, B)
g = Segment(B, A)
h = Segment(A, D)
E = Midpoint(e)
F = Midpoint(f)
G = Midpoint(g)
H = Midpoint(h)

Tool: Compas
Choisir un écartement (deux points), puis choisir un centre
Input: A, B, C
Output: c

u = Vector(A, B)
D = Translate(C, u)
c = Circle(C, D)