A = (-1, 0)
B = (3.34, -0.02)
C = (5.78, 1.7)
D = (1.08, 1.74)
Vieleck1, a, b, c, d = Polygon(A, B, C, D)
E = (-0.74, 4.78)
F = (3.5, 4.8)
Vieleck2, a_1, e, f, b_1 = Polygon(A, E, F, B)
g = 2.3 (slider from 0 to 5, step 0.1)
AA: (x(A), y(A) + g)
BB: (x(B), y(B) + g)
CC: (x(C), y(C) + g)
DD: (x(D), y(D) + g)
Vieleck3, a_2, aa, bb, b_2 = Polygon(A, AA, BB, B)
Vieleck4, a_3, d_1, dd, aa_1 = Polygon(A, D, DD, AA)
Vieleck5, b_3, c_1, cc, bb_1 = Polygon(B, C, CC, BB)
Vieleck6, cc_1, dd_1, d_2, c_2 = Polygon(CC, DD, D, C)
Vieleck7, cc_2, dd_2, aa_2, bb_2 = Polygon(CC, DD, AA, BB)
Text1: "" + (12.0 * g) + " cm³"