Contains

• regular polyhedron

  Any one of five solids whose faces are congruent regular polygons and whose polyhedral...

• prism

  A polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are...

• prismatoid

  A polyhedron whose vertices all lie in one or the other of two parallel planes; the faces...

• hexahedron

  Any polyhedron having six plane faces.

• concave polyhedron

  A polyhedron some of whose plane sections are concave polygons.

• convex polyhedron

  A polyhedron any plane section of which is a convex polygon.

• trapezohedron

  A polyhedron whose faces are trapeziums.

• pyramid

  A polyhedron having a polygonal base and triangular sides with a common vertex.

• pentahedron

  Any polyhedron having five plane faces.

• tetrahedron

  Any polyhedron having four plane faces.

• decahedron

  Any polyhedron having ten plane faces.

• octahedron

  Any polyhedron having eight plane faces.

• icosahedron

  Any polyhedron having twenty plane faces.

• dodecahedron

  Any polyhedron having twelve plane faces.