1cm

E = (9, 4)
F = (11, 4)
a = Segment(E, F)
C = (13, 8)
b = Line(C, a)
c = Segment(F, C)
d = Line(E, c)
D = Intersect(b, d)
poly1, e, f, c_1, d_1 = Polygon(E, F, C, D)
g = Circle(E, 1)
A = Point(g)
B = (12, 3)
G = Point(Circle[B, 1])
h = Segment(B, G)