The Schläfli symbol is a part of geometry, used to represent the shape of polyhedra.

He is good at solving geometry problems.

He told me the whole story of the incident.

He is using that coat from winter to spring.

You need to use your head to solve this problem.

A regular polyhedron is a polyhedron where all faces are the same shape.

By learning phonetic symbols, accurate pronunciation becomes possible.

Can you tell me the phonetic symbol of this word?

Reading clefs is difficult.

The bass clef is one of the basic elements of music.