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陀螺延长三角形双环左手

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发布时间 2026/11/12 23:12:00 压缩包 4MB
陀螺延长-三角形-双环-左手

In geometry, the gyroelongated triangular bicupola is one of the Johnson solids (J44). As the name suggests, it can be constructed by gyroelongating a triangular bicupola (either triangular orthobicupola, J27, or the cuboctahedron) by inserting a hexagonal antiprism between its congruent halves.

A Johnson solid is one of 92 strictly convex polyhedra that is composed of regular polygon faces but are not uniform polyhedra (that is, they are not Platonic solids, Archimedean solids, prisms, or antiprisms). They were named by Norman Johnson, who first listed these polyhedra in 1966.

The gyroelongated triangular bicupola is one of five Johnson solids which are chiral, meaning that they have a "left-handed" and a "right-handed" form. The two chiral forms of J44 are not considered different Johnson solids.
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