Τετραπλή στροφή γύρω 
από το κόκκινο κέντρο. 

Εικόνα

Άγγελος

Α = (6.923709318246306, -4.0362596876624455)
Β = (40.80474726934405, -4.0362596876624455)
Γ = (6.923709318246306, -4.0362596876624455)
Δ = (40.80474726934405, -4.0362596876624455)
α = 0 rad (slider from 0 to 90°)
Ε = (25.466082758220498, 12.82409711007491)
εικ2' = Rotate(εικ2, α, Ε)
β = 0 rad (slider from 0 to 90°)
εικ2'' = Rotate(εικ2', β, Ε)
γ = 0 rad (slider from 0 to 90°)
εικ2''' = Rotate(εικ2'', γ, Ε)
δ = 0 rad (slider from 0 to 90°)
εικ3 = Rotate(εικ2''', δ, Ε)
a = true
b = true