eq1: x + y = 125
eq2: (5 * x) + (6 * y) = 180
eq3: x = 10
f: y = 5
G = Intersect(eq2, eq1)
A: (0, 0)
B = Intersect(f, eq3)
C = Intersect(eq3, eq2)
D = Intersect(f, eq2)
F = Intersect(f, eq1)
H = Intersect(eq3, eq1)
t1, d, b, c = Polygon(B, C, D)