A triangular prism is a polyhedron that has five faces, or flat surfaces. Every shape has properties or characteristics that help you differentiate it from others. For example, a square has four sides and four corners, while a 3-D cube has six faces, eight vertices, or corners, and 12 edges, the lines where the faces meet.

A triangular prism is a bit more complex. It has:

Five faces: three rectangles and two triangles

Six vertices, or corners

Nine edges

If you look up at your roof, you might be looking at a triangular prism. If you ever ate a chocolate bar called a Toblerone, you have eaten a triangular prism. Lastly, if you ever have been camping in a tent then you have slept in a triangular prism.

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