Kvadrater

Rektangler

Andre firkanter

Tegn og farv 3 af hver af de viste firkanter.

A = (-1, 4)
B = (-1, 2)
C = (1, 2)
D = (1, 4)
polygon1, a, b, c, d = Polygon(A, B, C, D)
E = (3, 4)
F = (7, 4)
G = (7, 2)
H = (3, 2)
polygon2, e, f, g, h = Polygon(E, F, G, H)
I = (9, 2)
J = (10, 4)
K = (12, 4)
L = (13, 2)
polygon3, i, j, k, l = Polygon(I, J, K, L)
M = (14, 2)
O = (17, 2)
P = (15, 3)
N = (15, 4)
polygon4, m, n, o, p = Polygon(M, N, O, P)