Cube Dissection, Robert Reid, Three-Piece Puzzle, Liu Hui Cube Extension

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####Cube Dissection, Robert Reid, Three-Piece Zigzag Puzzle, Liu Hui Cube Extension Yet another way to dissect a cube into three congruent pieces. It takes three copies to make a cube. It is simple to assemble with a *gentle twist*. There are four sizes provided. The 50mm^3 one is recommended. This dissection can be credited to Robert Reid in recent history (see URL below). To me, it seems to be an extension of the cube-dissecting method of Liu Hui (263 AD, Chinese mathematician), who detailed a 1/2, 1/3, 1/6 dissection of a cube (or, in general, a cuboid) in his *Nine Chapters on Mathematical Art*. The famous Liu Hui dissection is the end case of a family of *infinitely many* such designs, I think. I am pretty sure it is not unique! In this specific design, I used the midpoints of certain edges and diagonals. The critical point of dissection used is a *centroid*. It is an interesting design and is slightly challenging mathematical manipulation in a 3D design environment like Fusion 360 ®. Have fun playing with math and art! ####References 1. Reid, Robert. http://www.martinhwatson.co.uk/robert_reid.html 2. Bu, Lingguo. https://www.maa.org/press/periodicals/convergence/exploring-liu-hui-s-cube-puzzle-liu-hui-s-principle Print Settings