$l$

$g$

$\mathrm{H}$

$\mathrm{F}$

H = (-1, 4)
e = OrthogonalLine(H, g)
F = Point(f)
α = Angle(g, e)

Tool: 도구1
Input: D, E
Output: p

F = Midpoint(D, E)
G = Midpoint(D, F)
H = Midpoint(G, F)
k = Circle(F, H)
j = Segment(D, E)
l = OrthogonalLine(F, j)
I = Intersect(k, l, 2)
p = CircumcircleArc(D, I, E)