(0, 0)

A (1, a)

P (x, y)

1

a = %v

(a, -1)

(-a, 1)

O = (0, 0)
U = (1, 0)
r = Line(U, (1.0, 1.0))
A = Point(r)
b = Line(O, A)
P = Point(b)
s = Segment(O, U)
a = Segment(U, A)
B: (x(P), 0.0)
C: (0.0, y(P))
k = Circle(O, A)
i = OrthogonalLine(O, b)
D, E = Intersect(k, i)
e = Segment(E, D)
α = Angle(U, O, A)
c = Segment(P, E)
d = Segment(P, D)
V = (0, 1)
polígono1: {Polygon[O, U, A]}
polígono2: {Polygon[O, V, E]}
F = (0, -1)
polígono3: {Polygon[O, F, D]}
f = Segment(E, V)
g = Segment(F, D)
h = Segment(O, V)
j = Segment(O, F)
I = Point(b)
n = Line(I, O)
m = Slope(n)
texto1: "a = " + (y(A))