A = (-4.922605232586414, -0.6606991149158902)
B = (12.01439259137397, -0.6606991149158902)
a = Segment(A, B)
C = Midpoint(a)
c = Circle(C, B)
D = Point(c)
X = Segment(D, A)
Y = Segment(D, B)
e = OrthogonalLine(D, a)
E = Intersect(e, a)
h = Segment(D, E)
α = Angle(B, E, D)
β = Angle(A, D, B)
khoangcachDB = Distance(D, B)
khoangcachDA = Distance(D, A)
Văn bảnDA: "=" + khoangcachDA
X_1 = Segment(A, E)
Y_1 = Segment(E, B)
b = Segment(A, E)
d = Segment(E, B)
f = Distance(d, b)