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Тасвирлама
ТасвирSteiner chain animation ellipse.gif
English: Animation of a Steiner chain of six circles, showing the ellipse (green) on which their centers move and the orange circle on which their points of tangency move. See also Image:Steiner_chain_animation_opt.gif.
{{Information |Description={{en|1=Animation of a Steiner chain of six circles, showing the ellipse (green) on which their centers move and the orange circle on which their points of tangency move. See also Image:Steiner_chain_animation_opt.gif.}} |S