Right circular cylinder with a radius of 1 foot and a height/altitude of 2 feet.

Illustration of the plan and shaded elevation of a cylinder. The cylinder is viewed from the side and…

Illustration of a cylinder showing, "If a piece of paper is fitted to cover the convex surface of a…

Illustration of a regular dodecahedron. A regular dodecahedron is a polyhedron with twelve equal pentagonal…

A development or rolled out image exercise problem of the dome and finding the true shape of the hip,…

"The expansion of solids by heat is clearly shown by the following experiment: m represents a ring of…

"The part of any solid between two planes, which may be either parallel or inclined to each other: as,…

Diagram used to prove the theorem: "The volume of the frustum of a pyramid (cone) is equal to the sum…

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

Illustration of a frustum of a hexagonal pyramid (including cross-section).

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

Pattern that can be used to make a hollow rectangular prism. Development of hollow rectangular prism.

Illustration of pattern showing steps to make a house. The house is a composite figure made up of a…

Illustration of the bottom part of an icosahedron. The base consists of a regular pyramid, upon which…

Illustration of the steps to a construction of an icosahedron. The base consists of a regular pyramid,…

Illustration showing a general way the method of arranging the triangles on the irregular surface of…

"An oblique cone connecting two parallel pipes of different diameters... the true size of the base is…

A development or rolled out oblique cone using triangulation. The method of triangulation is done by…

A stretched out image of the octagonal dome by using projection or with dividers to create a five-piece…

A problem exercise creating a stretched out or developed image of the octagonal light shade by using…

Illustration showing the intersection of a plane with an octagonal prism.

Problem exercise in drawing a development or a stretchout image of the octagonal roof and finding the…

Diagram used to prove the theorem: "The opposite faces of a parallelopiped are equal and parallel."

Diagram used to prove the theorem: "The rectangular parallelopipeds which have two dimensions in common…

Diagram used to prove the theorem: "The rectangular parallelopipeds are to each other as the product…

Diagram used to prove the theorem: "The volume of a any parallelopiped is equal to the product of its…

Diagram used to prove the theorem: "The volume of a rectangular parallelopiped is equal to the product…

Illustration of a frustum of a pentagonal pyramid (including cross-section).

Diagram used to prove the theorem: "Two similar polyhedrons may be decomposed into the same number of…

Illustration of the intersection of an octagonal prism and a cylinder. The figures intersect at an oblique…

Illustration of a pentagonal prism showing, "If a piece of paper is fitted to cover the convex surface…