Platonic solid

/platˈɒnɪk sˈɒlɪd/

/plætˈɑːnɪk sˈɑːlɪd/

Platonic solid

any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent

Examples

1. These are the Platonic solids.

2. But the Platonic solids all have wonderfully symmetric properties.

3. These were the lovely solids called Platonic solids, after Plato, that we used as our trophies early this afternoon.

4. so there were five Platonic solids, the sphere gives us six-- and there were six planets then known, out to Saturn.