He made a model of a dodecahedron.

This regular tetrahedron is composed of equilateral triangles on all sides.

This is a model of a great icosahemidodecahedron.

This 立方半八面體 is one of the shapes in geometry.

This regular dodecahedron is a geometric shape with perfect symmetry.

This solid is called a regular icosahedron, and it is made up of 20 equilateral triangles.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

The great icosihemidodecahedron is a cube with a very complex shape.