Tetrahedron a tetrahedron is a pyramid whose base is a triangle. It has six edges and four faces all triangular .

Tetrahedron a tetrahedron is a pyramid whose base is a a triangle.It has six edges and four faces all triangular.

A tetrahedron is a pyramid whose base is a triangle (b) square (c) rectangle (d) quadrilateral

A tetrahedron is a pyramid whose base is a (a) triangle (b) square (c) rectangle (d) quadrilateral

No. of faces of a triangular pyramid

Pyramid a pyramid is a solid whose base is a plane rectilinear figure and whose side-faces are triangles having a common vertex outside the plane of the base.

A tetrahedron has 3 triangular faces and 1 rectangular face.

Let k be the length of any edge of a regular tetrahedron (a tetrahedron whose edges are equal in length is called a regular tetrahedron).Show that the angle between any edge and a face not containing the edge is cos^(-1)(1/sqrt(3))

Let k be the length of any edge of a regular tetrahedron (a tetrahedron whose edges are equal in length is called a regular tetrahedron). Show that the angle between any edge and a face not containing the edge is cos^(-1)(1//sqrt(3)) .

Regular tetrahedron a tetrahedron whose all the edges are of equal length is called a regular tetrahedron.