Quick Reference ~ A maths Dictionary for Kids by Jenny Eather Email jeather@iprimus.com.au A Maths Dictionary for Kids by Jenny Eather at www.amathsdictionaryforkids.com


Ii

icosahedron

• an icosahedron is any polyhedron with 20 faces.
• a regular icosahedron is one of the Platonic solids having
20 congruent faces that are equilateral triangles,
30 edges and 12 vertices.

EXAMPLES:
icosahedron
the Platonic solids


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