Our project is scheduled to be completed on the twentieth day of the month.

The shape of this object is very unique.

He is good at solving geometry problems.

The 正百二十胞體 is one of the regular polytopes in four dimensions.

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

He has two apples.

He made a model of a regular dodecahedron.

He made a model of a regular icosahedron.

This figure is symmetric.

This figure has perfect symmetry.