f = 5.4 (slider from 0 to 8, step 0.05)
A = Intersect(xAxis, yAxis)
C: (f, 0)
B: (f, 5)
poly1, c, a_1, b = Polygon(A, B, C)
D: (8, 5)
E: (8, 0)
poly2, b_1, d, e, c_1 = Polygon(B, D, E, C)