**How many rectangles are in an octagonal prism?**
https://americanhistory.si.edu/collections/search/object/nmah_1301120

This puzzle is a version of a Rubik's Cube with twelve of the small cubes making up the Rubik's Cube cut in half so the resulting shape is an octagonal prism, a solid with ten faces, two parallel octagons that are connected by eight rectangles. There are several names for this puzzle: Octagonal Prism Puzzle, Magic Octagonal Prism, The Barrel, and The Octagon.

**DA:** 25 **PA:** 67 **MOZ Rank:** 15