A prism is a 3D shape which has a constant cross section - both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape. For example, in the prism ...

I wanted to report a small issue I noticed in Problem #883: Projection Area of 3D Shapes. In the description of Example 1, the illustrations of the projections are correct, but the labels of the ...

This journal, titled "The Geometry of Flat and Full: Comparing 2D and 3D Shapes," explores the fundamental differences and relationships between two-dimensional (2D) and three-dimensional (3D) shapes.