ClipArt of pyramids with various bases. A pyramid is a solid geometric figure with a base that is a polygon and sides that are triangular in shape and meet at a common point at the top, known as the apex.

"This form consists of twelve isoceles triangular faces, each of which intersects two of the horizontal…

An image of a hexagonal pyramid stretched out. The length of the edges are equal plane, and intersects…

Illustration of the intersection of a hexagonal pyramid and a plane.

Illustration of the projection of a hexagonal pyramid that is in a right position.

Illustration of the projection of a hexagonal pyramid that is obliquely inclined.

"An orthorhombic pyramid has eight triangular faces, each of which intersects all three of the crystallographic…

A pyramid is a solid whose base is a plan figure, and whose sides are triangles uniting at a common…

"If a pyramid be cut by a plane, parallel to the base, so as to form two parts, the lower part is called…

"A pyramid is a solid whose base is a polygon, and whose sides are triangles uniting at a common point,…

"The pyramids of Egypt are well entitled to a place among the most interesting curiosities in the world.…

Illustration of a right decagonal pyramid. The base is a decagon and the faces are isosceles triangles.…

Illustration of the development of a pyramid. When the pyramid covered in paper (figure a) is rolled…

The frustum of a pentagonal pyramid is the portion of a pyramid included between the base and a section…

Illustration of a right hexagonal pyramid with hidden edges shown. The base is a hexagon and the faces…

Illustration of a right hexagonal pyramid with hidden edges shown. The base is a hexagon and the faces…

Illustration of a hollow right decagonal pyramid. The base is a decagon and the faces are isosceles…

Illustration of a hollow right hexagonal pyramid. The base is a hexagon and the faces are isosceles…

Illustration of a hollow right nonagonal pyramid. The base is a nonagon and the faces are isosceles…

Illustration of a hollow right octagonal pyramid. The base is an octagon and the faces are isosceles…

Illustration of an inverted pentagonal pyramid. It is pyramid with a regular pentagon for its base.

Illustration of a hollow right rectangular pyramid. The base is a rectangle and the faces are isosceles…

Illustration of a hollow right heptagonal (septagonal) pyramid. The base is a heptagon and the faces…

Illustration of a hollow right heptagonal (septagonal) pyramid. The base is a heptagon and the faces…

Illustration of the isometric of an oblique pentagonal pyramid.

Illustration of a right nonagonal pyramid with hidden edges shown. The base is a nonagon and the faces…

Illustration of a right octagonal pyramid with hidden edges shown. The base is an octagon and the faces…

Illustration of a right pentagonal pyramid with hidden edges shown. The base is an pentagon and the…

Illustration of a right pentagonal pyramid with hidden edges shown. The base is an pentagon and the…

Illustration of a right pentagonal pyramid viewed from below with hidden edges shown. The base is an…

Illustration of a right pentagonal pyramid viewed from below. The base is an pentagon and the faces…

Illustration of pentagonal pyramid used to show that the volume is equal to one third of the product…

Illustration of a right rectangular pyramid with hidden edges shown. The base is a rectangle and the…

Illustration of a right rectangular pyramid with hidden edges shown. The base is a rectangle and the…

Illustration of a right rectangular pyramid with hidden edges shown. The base is a rectangle and the…

An illustration of a regular pyramid with a square base and labels on lateral edge, slant height, altitude,…

"The pyramid of the second order is a form composed of eight isoceles triangular faces, each of which…

Illustration of a right septagonal/heptagonal pyramid with hidden edges shown. The base is a heptagon…

Illustration of a non-right, or skewed, hexagonal pyramid with hidden edges shown. The base is a hexagon…

Illustration of a non-right, or skewed, rectangular pyramid with hidden edges shown. The base is a rectangle…

Plan, front, and side views of a square pyramid after revolving pyramid through 30° with vertical…

Plan, front, and side views of a square pyramid after revolving pyramid through 30° with horizontal…

Illustration of triangular pyramid used to show that the volume is the limit of the sum of the volumes…

Illustration of triangular pyramid used to show that the volume is equal to one third of the product…

Illustration of 2 right pentagonal pyramids with hidden edges shown. The pentagonal bases are congruent,…

Illustration of 2 right rectangular pyramids with hidden edges shown. The rectangular bases are congruent,…

Two triangular pyramids having equivalent bases and equal altitudes are equivalent.

Illustration of pentagonal and triangular pyramids cut by a plane parallel to the bases.

Illustration of 2 similar right pentagonal pyramids with hidden edges shown. The height of the pyramid…