Parabola Construction 3
Author: M. Dabbs, R. Walcott

Drag the generator point G.

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A_1 = (-3.38, 1.2)
B = (10.5, 1.2)
a = Line(A_1, B)
A = Point(a)
b = OrthogonalLine(A, a)
P = Point(a)
G = Point(a)
d = OrthogonalLine(G, a)
C = Midpoint(P, G)
c = Circle(C, G)
D, E = Intersect(c, b)
e = OrthogonalLine(E, b)
f = OrthogonalLine(D, b)
F = Intersect(e, d)
H = Intersect(f, d)
loc1 = Locus(F, G)
loc2 = Locus(H, G)