Ποιά από τα ανωτέρω τετράπλευρα είναι τετράγωνα;

ΛΑΘΟΣ

ΣΩΣΤΟ

ΛΑΘΟΣ

ΑΒΓΔ

ΕΖΗΘ

ΙΚΛΜ

Α = (2.68, -0.1)
Β = (5.22, 0.62)
Γ = (5.88, -1.74)
Δ = (4.36, -2.72)
q1, α, β, γ, δ = Polygon(Α, Β, Γ, Δ)
ε = Angle(Α, Β, Γ)
ζ = Angle(Γ, Δ, Α)
f = Segment(Α, Β)
g = Segment(Β, Γ)
h = Segment(Γ, Δ)
i = Segment(Δ, Α)
Θ = (8.52, -0.78)
Ζ_{1} = (10.98, 0.38)
j = Segment(Θ, Ζ_{1})
Η_{1} = Midpoint(j)
k = OrthogonalLine(Η_{1}, j)
Ε = Point(k)
Η = Point(k)
l = Segment(Ε, Η)
Κ_{1} = Midpoint(Ε, Η)
η = Angle(Θ, Η_{1}, Η)
m = Segment(Θ, Ε)
n = Segment(Ε, Ζ_{1})
p = Segment(Ζ_{1}, Η)
q = Segment(Η, Θ)
r = Segment(Ε, Η_{1})
s = Segment(Η_{1}, Η)
t = Segment(Η_{1}, Ζ_{1})
a = Segment(Η_{1}, Θ)
Ζ = Intersect(n, p)
Ι = (14.42, -0.24)
Λ = (17.8, -0.1)
b = Segment(Ι, Λ)
Ο = Midpoint(Ι, Λ)
c = OrthogonalLine(Ο, b)
Κ = Point(c)
Μ = Point(c)
d = Segment(Κ, Μ)
θ = Angle(Λ, Ο, Κ)
e = Segment(Κ, Ο)
f_1 = Segment(Ο, Μ)
g_1 = Segment(Ι, Ο)
i_1 = Segment(Ο, Μ)
j_1 = Segment(Ο, Μ)
k_1 = Segment(Ι, Κ)
l_1 = Segment(Κ, Λ)
m_1 = Segment(Λ, Μ)
n_1 = Segment(Μ, Ι)
h_1 = Segment(Ο, Λ)
o = false
u = false
v = false