There are many types of nets for the different 3D shapes. A net is made from polygons that can be folded and joined to make a polyhedron. Here is the net of a triangular prism.

Triangular prism Triangular prisms have 5 flat faces. 2 are triangle shaped and 3 are rectangle shaped. Everyday things that have the shape of a triangular prism include a tent and a slice of cake.