Platonic solid

Definitions

Any of five convex polyhedra with congruent regular polygonal faces, which have a high degree of symmetry and have been studied since antiquity.

Equivalents

Examples

“As the names suggest⟳, the groups and their existence are connected to the five Platonic solids. They are in fact the rotation groups of the Platonic solids.”

“The boat which the gods tell⟳ Utnapishtim to build⟳ is no ordinary boat but a perfect cube with seven levels; the ark resembles more a Platonic solid from the Timaeus than a seaworthy craft.”

“The erroneous number⟳ of planets, six, gave him^([Johannes Kepler]) the clue for his model⟳ of five Platonic solids (the five regular convex polyhedra) on which he erected the universe.”

“In the 13th and final book, he^([Euclid]) shows how to construct the five Platonic solids, and proves that they are the only regular polyhedra (bodies whose faces are congruent, regular polygons) that exist⟳.”

CEFR level