$x$

$6-2x$

$6-2x$

$x$

$6-2x$

$x$

$x$

$x$

$x$

$x$

$x$

$x$

A = (3, 1)
B = (12, 1)
poly1, f, g, h, C = Polygon(A, B, 3)
D = (5.5, 1)
i = Line(D, g)
E = (9.5, 1)
j = Line(E, h)
k = Segment(A, D)
F = Point(h)
l = Segment(C, F)
m = Line(F, f)
G = Intersect(i, h)
H = Intersect(j, g)
I = Intersect(m, g)
poly2, d, g_1, f_1, i_1, h_1, e = Polygon(D, G, F, I, H, E)
n = Segment(A, D)
p = Segment(A, G)
q = Segment(E, B)
r = Segment(B, H)
s = Segment(I, C)
t = Segment(C, F)
a = Segment(F, I)