Parabola Construction 4
Author: M. Dabbs, R. Walcott

Drag the generator point G.

Double click to open independently.

A_1 = (-3.38, 1.2)
B = (10.5, 1.2)
a = Line(A_1, B)
G = Point(a)
d = OrthogonalLine(G, a)
P = (2.94, -0.04)
c = Circle(G, P)
b = Line(P, G)
k = 1.5 (slider from -2 to 5, step 0.1)
G' = Dilate(G, k, P)
e = OrthogonalLine(G', b)
C = Intersect(e, d)
loc1 = Locus(C, G)
α = Angle(C, G', G)