Dodecahedron

(1) A general dodecahedron is any polyhedron having 12 faces. (2) The regular dodecahedron is the Platonic solid comprised of 12 pentagonal faces, 20 vertices, and 30 edges.

Dodecahedron is a middle school-level concept.

Prerequisites

Platonic Solid:	The Platonic solids are the five convex solids composed of identical regular polygons.
Regular Polygon:	A regular polygon is a polygon in which the sides are all the same length and the angles all have the same measure.

Classroom Articles on Solid Geometry

	Cone	Prism
	Convex Hull	Pyramid
	Cross Section	Solid Geometry
	Cube	Sphere
	Cylinder	Surface
	Icosahedron	Surface Area
	Octahedron	Tetrahedron
	Polyhedron	Volume

Classroom Articles on Geometry (Up to Middle School Level)

	Acute Angle	Midpoint
	Altitude	Nonagon
	Angle	Obtuse Angle
	Area	Octagon
	Circle	Parallel
	Circumference	Parallelogram
	Complementary Angles	Pentagon
	Congruent	Perimeter
	Decagon	Perpendicular
	Diameter	Pi
	Dodecagon	Point
	Equilateral Triangle	Polygon
	Geometric Construction	Quadrilateral
	Golden Ratio	Radius
	Golden Rectangle	Rectangle
	Hendecagon	Right Triangle
	Heptagon	Square
	Hexagon	Supplementary Angles
	Hypotenuse	Trapezoid
	Isosceles Triangle	Triangle