Square Pyramid Revolved 30°
Plan, front, and side views of a square pyramid after revolving pyramid through 30° with vertical…
Square Pyramid Revolved 30°
Plan, front, and side views of a square pyramid after revolving pyramid through 30° with horizontal…
Triangular Pyramid For Volume
Illustration of triangular pyramid used to show that the volume is the limit of the sum of the volumes…
Triangular Pyramid For Volume
Illustration of triangular pyramid used to show that the volume is equal to one third of the product…
2 Right Pentagonal Pyramids
Illustration of 2 right pentagonal pyramids with hidden edges shown. The pentagonal bases are congruent,…
2 Right Rectangular Pyramids
Illustration of 2 right rectangular pyramids with hidden edges shown. The rectangular bases are congruent,…
Equivalent Triangular Pyramids
Two triangular pyramids having equivalent bases and equal altitudes are equivalent.
Pyramids With Pentagonal and Triangular Bases
Illustration of pentagonal and triangular pyramids cut by a plane parallel to the bases.
Similar Pentagonal Pyramids
Illustration of 2 similar right pentagonal pyramids with hidden edges shown. The height of the pyramid…
Triangular Pyramids for Volume
Illustration showing that the volume of 2 triangular pyramids, having the same trihedral angle of the…
Development Of Rectangular Prism
Illustration of the development of a rectangular prism. "Assume now that the prism is laid on the drawing…
Projection Of Rectangular Prism
Illustration of the projection of a rectangular prism that is represented as if it were standing on…
Projection Of Rectangular Prism
Illustration of the projection of a rectangular prism whose broad side makes an angle of 30° with…
Projection Of Rectangular Prism
Illustration of the projection of a rectangular prism whose base makes an angle of 160° with the…
Projection Of Rectangular Prism
Illustration of the projection of a rectangular prism whose base makes an angle of 17.5° with the…
Volume Of A Rectangular Solid
Illustration of a 5 in. by 3 in. by 4 in. rectangular solid with each cube in the solid representing…
Similar Rectangular Solids
Illustration of a 1 in. by 2 in. by 1 in. rectangular solid that is similar to a 2 in. by 4 in. by 2…
Bottom Half of a Regular Dodecahedron
Illustration of a the bottom half of a regular dodecahedron. A regular dodecahedron is a polyhedron…
Various Solid Forms
Illustration containing a tetrahedron, hexahedron, octahedron, dodecahedron, and icosahedron, placed…
Irregular Solid With Triangular Surfaces
Illustration of an irregular solid form made up of triangular surfaces on a flat surface.
Irregular Solid With Triangular Surfaces
Illustration of an irregular solid form made up of triangular surfaces unfolded on a flat surface. A…
Development Of Sphere
Illustration showing the development of a sphere by the perspective of its resolved cones.
Sphere Formed By Pyramids
Illustration showing that "the solids formed by the dissected part of the sphere are pyramids."
Projection of Square Bar With Cylindrical Portion
Projection of a square bar with a cylindrical portion.
Intersection of Square Pyramid and a Plane
Illustration of the intersection of a square pyramid and a plane.
Intersection of Square Pyramid and a Plane
Illustration of the intersection of a square pyramid and a plane.
Pattern for Tetrahedron
Pattern that can be cut out and folded to construct a regular tetrahedron. Fold on the dotted lines,…
Similar Tetrahedrons
The volumes of two similar tetrahedrons are to each other as the cubes of their homologous (corresponding)…
Two Proportional Tetrahedrons
Diagram used to prove the theorem: "Two tetrahedrons having a trihedral angle in each equal, are to…
Development Exercise of Cylinder using Three Piece Elbow
The exercise problem of creating a three piece elbow development or rolled out image of the cylinder…
Projections of Triangular Prism With Hole
Projections of a triangular prism or block with a square hole.
Volume of Triangular Prism
Diagram used to prove the theorem: "The volume of a triangular prism is equal to the product of its…
Development Exercise of Triangular Pyramid
Exercise problem to develop, or rolled out, image of the triangular pyramid by creating an equal length…
Intersection of Triangular Pyramid and a Plane
Illustration of the intersection of a triangular pyramid and a plane.
Volume of Triangular Pyramid
Diagram used to prove the theorem: "The volume of a triangular pyramid is equal to one third of a triangular…
Equivalent Triangular Pyramids
Diagram used to prove the theorem: "Two triangular pyramids having equivalent bases and equal altitudes…
Intersection of Two Cones
"The cone B would be developed by cutting a right section as S—S whose stretchout will be a circle…
Projection Of Wedge
Illustration of the projection of a wedge of a rectangular prism that is standing on one of its triangular…
Projection Of Wedge
Illustration of the projection of a wedge of a rectangular prism that is standing on one of its rectangular…
Projection Of Wedge
Illustration of the projection of a wedge of a rectangular prism that is viewed from the side.