Parabeltangente zu einem Parabelpunkt
Author: Prof. Dr. Dörte Haftendorn

rechts-links

Sehne

Tangente als Parallele

C beliebig auf Parabel

Konstruktion einer 
Parabeltangente in A

Kasten

Ha 08 und 09

a = 0.10000000000000019
f(x) = a x^(2)
A = Point(f)
b = OrthogonalLine(A, xAxis)
A_x = Intersect(b, xAxis)
C = Point(f)
C_x: (x(C), 0)
D_x = Mirror(C_x, A_x)
c = OrthogonalLine(D_x, xAxis)
E = Intersect(f, c)
d = Line(E, C)
e = Line(A, d)
g = Segment(C_x, A_x)
h = Segment(A_x, D_x)
i = Segment(C, C_x)
j = false
k = false
l = false
m = false
B = Intersect(c, e)
n = Line(C, C_x)
F = Intersect(n, e)
poly1, f_1, b_1, e_1, c_1 = Polygon(F, B, E, C)
o = false