自配极四面形 self polar tetrahedron ; [数] self-conjugate tetrahedron

德朗奈四面形 Delaunay foursider delay

坐标四面形 coordinate tetrahedron ; tetrahedron of reference

透视四面形 [数] perspective tetrahedron

自共轭四面形 [数] self-conjugate tetrahedron ; self-polar tetrahedron

四面形孢子 tetrahedric spore

局部四面形 local tetrahedron

四隐形页面 Cloaked Page

超四面形 hypertetrahedron