tetrahedron (English)
Contributed by: Tapan K Sarma(তপন কুমাৰ শৰ্মা) on 2016-06-22
1. Geometry(Material Noun-Neuter) A tetrahedron (plural: tetrahedra ) is simply a pyramid with triangular base (so no, not like the ones in Egypt). It`s a solid object with four triangular faces, three on the sides (lateral faces), and one on the bottom (base), and four vertices(corners). চাৰিখন পিঠি থকা, ত্ৰিভুজ আকৃতিৰ ভূমি যুক্ত পিৰামিড আকাৰৰ বস্তুু৷