Math Definitions - Letter P

Platonic Solids

Definition of Platonic Solids

Definition of Platonic Solids

The Platonic solids are five polyhedrons (solids with flat faces).

They have the following special properties:

  • Every face of a Platonic solid is the same regular polygon (same size, same shape)
  • They have no dents in them (they are convex)

For example, the cube is a Platonic solid. Every face of the cube is a square of the same shape.

A tetrahedron in which every face is an equilateral triangle is a Platonic solid.

The Platonic solids are named after the Greek philosopher and mathematician, Plato, who thought that they made up the classical elements of earth, water, air and fire.


The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student.


Year 1 to Year 12 students

Learning Objectives

Learn common math terms starting with letter P

Author: Subject Coach
Added on: 6th Feb 2018

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