English: Trihexaflexagon in the process of unfolding. Trihexaflexagon is the simplest kind of flexagon. It is a hexagon glued from a strip of paper. It is able to flex, revealing new surfaces, but without changing its shape.
Русский: Тригексафлексагон в процессе разворачивания. Тригексафлексагон — простейший из флексагонов. Он представляет из себя шестиугольник склеенный из полоски бумаги. Он способен разворачиваться, открывая новые поверхности, но не меняя форму.
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