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Gyroelongated pentagonal cupolarotunda : ウィキペディア英語版 | Gyroelongated pentagonal cupolarotunda
In geometry, the gyroelongated pentagonal cupolarotunda is one of the Johnson solids (''J''47). As the name suggests, it can be constructed by gyroelongating a pentagonal cupolarotunda (''J''32 or ''J''33) by inserting a decagonal antiprism between its two halves. The gyroelongated pentagonal cupolarotunda is one of five Johnson solids which are chiral, meaning that they have a "left-handed" and a "right-handed" form. In the illustration to the right, each pentagonal face on the bottom half of the figure is connected by a path of two triangular faces to a square face above it and to the left. In the figure of opposite chirality (the mirror image of the illustrated figure), each bottom pentagon would be connected to a square face above it and to the right. The two chiral forms of ''J''47 are not considered different Johnson solids. ==External links==
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