四面半六面体
![](/Images/godic/202502/15/Tetrahemihexahedron1453.png")
![](/Images/godic/202502/15/Tetrahemihexahedron_vertfig1453.png")
在几何学中，四面半六面体是一种凹多面体，属于星形多面体及均匀多面体，也可以归类在非凸均匀多面体，其索引为U4。
- MathWorld上 Tetrahemihexahedron 的资料，作者：埃里克·韦斯坦因。
Tetrahemihexahedron
中文百科
英语百科
Tetrahemihexahedron 四面半六面体
![](/Images/godic/202502/15/Tetrahemihexahedron1454.png")
![](/Images/godic/202502/15/Tetrahemihexahedron_vertfig.svg1454.png")
![](/Images/godic/202502/15/RomanSurfaceTopView1454.PNG")
![](/Images/godic/202502/15/Octahedron1454.png")
In geometry, the tetrahemihexahedron or hemicuboctahedron is a uniform star polyhedron, indexed as U4. It has 6 vertices and 12 edges, and 7 faces: 4 triangular and 3 square. Its vertex figure is a crossed quadrilateral. Its Coxeter-Dynkin diagram is ![](/Images/godic/202502/15/CDel_node_11454.png"){kind=small}
![](/Images/godic/202502/15/CDel_3x1454.png"){kind=small}
![](/Images/godic/202502/15/CDel_rat1454.png"){kind=small}
![](/Images/godic/202502/15/CDel_d21454.png"){kind=small}
![](/Images/godic/202502/15/CDel_node1454.png"){kind=small}
![](/Images/godic/202502/15/CDel_31454.png"){kind=small}
(although this is a double covering of the tetrahemihexahedron).
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