A tetrahedron has 3 triangular faces and 1 rectangular face.

In a truncated tetrahedron the sum of no.of hexagonal faces and no.of triangular faces is

Boron element exists as icosahedron molecular form.It has 'X' number of triangular faces and 'Y' number of corner. What is the value of (X-Y)?

Boron element exists as icosahedron molecular form.It has 'X' number of triangular faces and 'Y' number of corner.What is the value of (x-Y) ?

A rectangular pyramid has 5 rectangular faces. state true or false

Let A_(1), A_(2), A_(3), A_(4) be the areas of the triangular faces of a tetrahedron, and h_(1), h_(2), h_(3), h_(4) be the corresponding altitudes of the tetrahedron. If the volume of tetrahedron is 1/6 cubic units, then find the minimum value of (A_(1) +A_(2) + A_(3) + A_(4))(h_(1)+ h_(2)+h_(3)+h_(4)) (in cubic units).

Let A _(1), A_(2), A_(3), A_(4) be the areas of the triangular faces of a tetrahedron, and be the corresponding altitudes of the tetrahedron. If volume of tetrahedron is 1//6 cubic units, then find the minimum value of (A_(1) + A_(2) + A+_(3)+A_(4)) (h_(1) + h _(2)h _(3) +h_(4)) (in cubic units).

Letter F is kept in front of a right triangular psim. The light rays enter perpendicular to the large rectangular face, is reflected twice by small rectangular faces and exits perpendicularly to the large rectangular face (see Fig.). Draw the image of the letter seen by the eye.

Vertex the common vertex of the triangular faces of a pyramid is called the vertex of the pyramid.

Vertex the common vertex of the triangular faces of a pyramid is called the vertex of the pyramid.