The tesseract represents a four-dimensional geometric shape.

He is interested in geometrical shapes.

The 正五胞體 is a simple convex polytope in four dimensions, having five vertices.

A tesseract is a four-dimensional geometric shape.

The 正二十四胞體 is one of the regular polytopes in four dimensions.

The shape of this object is very unique.

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

He is good at solving geometry problems.

He has difficulty expressing his emotions in words.

He showed his gratitude on his face.