Ideal solid and Platonic body

Ideal solid noun - Any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent.

Platonic body and ideal solid are semantically related. In some cases you can use "Platonic body" instead a noun phrase "Ideal solid".

Platonic body noun - Any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent.

Ideal solid and Platonic body are semantically related. You can use "Ideal solid" instead a noun phrase "Platonic body".