TETRAHEDRON

четырехгранник, тетраэдр - basic tetrahedron - canonical tetrahedron - congruence tetrahedron - coordinate tetrahedron - directed tetrahedron - holonomic tetrahedron - invariant tetrahedron - isosceles tetrahedron - isotropic tetrahedron - orthocentric tetrahedron - phonetical tetrahedron - polar tetrahedron - quadrirectangular tetrahedron - regular tetrahedron - self-polar tetrahedron - spherical tetrahedron - stellated tetrahedron - tetrahedron neighborhood - triakis tetrahedron - truncated tetrahedron - universal tetrahedron