This square box is very simple and beautiful.

He drew an equilateral triangle shape.

He made a model of a regular tetrahedron.

This orthophoto shows the details of the terrain very clearly.

There are times when we perform calculations with the haversine in trigonometry.

He is an expert in orthoepy, teaching pronunciation.

A positive-definite matrix is an important concept in linear algebra.

She has mastered the technique of facesitting.

Sakuramenzuhira represents the beautiful nature of Japan.

He made a model of a dodecahedron.