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File:Reuleaux triangle rotation corners.svg

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Description
English: Reuleaux triangle inscribed in a square; bold black line shows the boundary of the shape, shadowed by rotating this triangle inside the square. This shape almost coincides with the square itself (what is used in drilling square holes), except for four corners, at each of which its boundary coincides with an arc of an ellipse. One of these four ellipses (red) is shown, and its center (the opposite vertex of the square) is marked.
Русский: Треугольник Рёло, вписанный в квадрат. Жирная чёрная линия показывает границу области, которую покрывает треугольник при вращении внутри квадрата. Эта область почти совпадает с самим квадратом (что используется при сверлении квадратных отверстий), исключая четыре «уголка», каждый из которых задаётся дугой эллипса. Один из этих эллипсов показан красным, красной же точкой отмечен его центр.
Date
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Author LEMeZza

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11 September 2011

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current08:42, 11 September 2011Thumbnail for version as of 08:42, 11 September 2011298 × 298 (3 KB)LEMeZza{{Information |Description ={{en|1=Reuleaux triangle inscribed in a square; bold black line shows the boundary of the shape, shadowed by rotating this triangle inside the square. This shape almost coincides with the square itself (what is used in drill

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