Height the height of a pyramid is the length of the perpendicular from the vertex to the base.

If h is the length of the perpendicular drawn from a vertex of a regular tetrahedron

Right pyramid a pyramid is said to right pyramid if the perpendicular dropped from the vertex on the base meets the base at its central point.

Slant height the slant height of a regular right pyramid is the line segment joining the vertex to the midpoint of any-one of the sides of the base.

Slant height the slant height of a regular right pyramid is the line segment joining the vertex to the midpoint of anyone of the sides of the base.

ABC is a right angled triangle with base BC and height AB. The hypotenuse AC is four times the length of the perpendicular drawn to it from the opposite vertex. What is tan C equal to ?

Right pyramid a pyramid is said to right pyramid if the perpendicular dropped from the vertex on the base meets the base at its central point i.e. the centre of the inscribed or circumscribed circle. In other words the vertex of the pyramid lies on the perpendicular to the base drawn through its centre. Otherwise the pyramid is called an oblique prism.

Axis the axis of a pyramid is the straight line joining the vertex to the central point of the base.

Axis the axis of a pyramid is the straight line joining the vertex to the central point of the base.