#
Glossary

Solid shapes ---
cube ---
tetrahedron ---
octahedron ---
icosahedron ---
dodecahedron ---
other shapes ---
Euler's formula ---
glossary ---
for teachers

**Buckyball or Truncated Icosahedron** - solid shape with faces of pentagons and hexagons

**Convex** - sticking out not in. This site only covers with convex polyhedra.

**Cube** - solid shape with six square sides

**Cube Octahedron** - solid shape with faces of squares and triangles

**Dodecahedra** - plural of dodecahedron

**Dodecahedron** - solid shape with twelve faces - regular dodecahedron's faces are regular pentagons

**Edge** - line between one face of a polyhedron and another

**Equilateral triangle** - a triangle where all the sides (and angles) are equal - the angles will each be 60°

**Face** - flat bit on a polyhedron

**Hexagon** - flat shape with six sides - a regular hexagon has angles of 120°

**Icosahedra** - plural of icosahedron

**Icosahedron** - solid shape with twenty faces - regular icosahedron's faces are equilateral triangles

**Isosceles triangle** - triangle with two sides (and so two angles) the same lengths

**Octahedra** - plural of octahedron

**Octahedron** - solid shape with eight faces - regular octahedron's faces are equilateral triangles

**Pentagon** - flat shape with five sides - a regular pentagon has angles of 108°

**Platonic solids** - the five regular convex polyhedra

**Polygon** - flat shape

**Polyhedra** - plural of polyhedron

**Polyhedron** - solid shape (three dimensional)

**Pyramid** - solid shape with mostly triangles as faces - a regular pyramid is a tetrahedron

**Sphere** - solid shape which is a round ball

**Square** - flat shape with four equal sides - the angles will each be 90°

**Star** - solid shape with points

**Tetrahedra** - plural of tetrahedron

**Tetrahedron** - solid shape with four triangular faces, sometimes called a triangular pyramid

**Triangle** - flat shape with three sides

**Vertex** - point of a polyhedron (solid shape)

**Vertices** - plural of vertex

© Jo Edkins 2007 - Return to Solids index