$\scalebox{2} {%n}$

$\scalebox{2} {%n}$

$\scalebox{2} {%n}$

$\scalebox{2} {%n}$

$\scalebox{2} {%n}$

$a$

$b$

$h$

$c$

$d$

A = Intersect(xAxis, yAxis)
B = Point(xAxis)
C = Point(xAxis)
f = Segment(A, B)
g = Segment(B, C)
D = Midpoint(A, C)
c = Circle(D, A)
h = OrthogonalLine(B, g)
E = Intersect(c, h, 2)
i = Segment(A, E)
j = Segment(E, C)
α = Angle(A, E, C)
β = Angle(C, B, E)
k = Segment(B, E)
d = Semicircle(A, C)
l = OrthogonalLine(A, f)
F = Point(l)
m = OrthogonalLine(B, f)
n = OrthogonalLine(C, g)
p = OrthogonalLine(F, l)
G = Point(l)
q = OrthogonalLine(G, l)
H = Intersect(m, q)
I = Intersect(n, q)
r = Segment(G, F)
J = Intersect(m, p)
K = Intersect(n, p)
s = Segment(F, J)
t = Segment(H, J)
a = Segment(J, K)
b = Segment(K, I)