doddecahedron

Definition

1. Noun:
   • A polyhedron with twelve faces: "dodecahedron" is a three-dimensional geometric solid that has twelve flat faces, each typically a regular pentagon. It is one of the five Platonic solids.

Usage Examples

• Noun:
  • The dodecahedron is a fascinating shape studied in geometry. (A solid with twelve pentagonal faces.)
  • Children can build a dodecahedron using a net of twelve pentagons. (A physical model of this polyhedron.)

Advanced Usage

• "Regular dodecahedron": a specific type of dodecahedron where all faces are congruent regular pentagons, and all angles are equal.

  • A regular dodecahedron has 20 vertices and 30 edges. (A symmetrical, uniform polyhedron.)

• "Rhombic dodecahedron": a different polyhedron with twelve rhombus-shaped faces, not all faces being pentagons.

  • The rhombic dodecahedron appears in crystal structures. (A polyhedron with twelve rhombic faces.)

Variants and Related Words

• Dodecahedral (adj): relating to or having the shape of a dodecahedron.
  • The dodecahedral crystal was found in the mineral sample. (Shaped like a dodecahedron.)

Synonyms

• Polyhedron: a solid figure with many flat faces (a general term; dodecahedron is a specific type).
• Pentagonal dodecahedron: a less common synonym for a regular dodecahedron.

Related Idioms

• "Dodecahedron of thought": a metaphorical phrase (not common) suggesting a complex, multi-faceted idea or system.
  • His theory was a dodecahedron of thought, with twelve interconnected principles. (A metaphor for a structured, multi-part concept.)