noun
- a three-dimensional geometric shape with twelve flat faces
Usage: geometry
Examples
- The dodecahedron is one of the five Platonic solids.
- Each face of a regular dodecahedron is a pentagon.
- Students constructed paper models of dodecahedrons in geometry class.
- The ancient Greeks studied the mathematical properties of the dodecahedron.
- A dodecahedron has twenty vertices and thirty edges.
- The teacher used a wooden dodecahedron to demonstrate three-dimensional shapes.