He can speak four languages.

My family consists of four people.

He was born fourth among the quadruplets.

April is the season of spring.

There is a bookshelf in the corner of the room.

Anyhow, we have to solve that problem.

Anyway, I want to go home soon.

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

He is interested in the shape of a trapezohedron.

This beautiful trapezohedron represents the geometric beauty of nature.