1.  \; \text{ ... } a,b \text{ ... }

2.  \; \text{ ... } a,b \text{ ... }

3.  \; \text{ ... } a,b \text{ ... }

 \text{Postup} 

A_1 - stred súmer.

γ

k\left( T;r=\frac{2}{3}t_b  \right) 

B=ρ_{A_1}(C) ... =k∩o

\text{Oblúk }o\text{ ... vidieť úsečku }A_1A' \text{ pod uhlom }γ

A = (1.2889029391483002, 4.447555463325631)
B = (5.973322300547891, 2.9816827379897033)
C = (6.8018590583464595, 7.666102099389297)
t1, c, a, b = Polygon(A, B, C)
D = Midpoint(c)
B_1 = Midpoint(b)
t_b = Segment(B, B_1)
γ = Angle(A, C, B)
A_1 = Midpoint(a)
t_a = Segment(A, A_1)
T = Intersect(t_b, t_a)
A' = Mirror(A, A_1)
B' = Mirror(B, A_1)
C' = Mirror(C, A_1)
t1', c', a', b' = Polygon(A', B', C')
f = Segment(A_1, A')
α = Angle(A_1, B, A')
o = CircumcircleArc(A_1, B, A')
k = Circle(T, B)
E = Point(k)