Reitzel continued his work until the monument was completed in 1989 . The " Arche " is almost a perfect cube with grand military parades that marked the bicentennial of the French revolution and completed the line of monuments that forms the " Axe historique " running through Paris.
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For example : the Wolfsegg Iron was said to be a perfect cube, but in fact it is not; the Klerksdorp spheres were said to be perfect spheres, but they are not; and the Iron pillar of Delhi was said to be " rust proof ", but it has some rust near its base.
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Two of the most popular complex structures are the 2?? cube which is a perfect cube with each face made of 4 pieces ( all in all, 24 pieces ) and the Star structure, which is made of 6 cubes attached in a single-cube sized common centre ( all in all, 30 pieces ).
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The idea that this room could have been used for initiation into Masonic mysteries is further supported by the proportions of this room as a perfect cube measuring 15x15x15 feet the equivalent of 10 cubits by 10 cubits by 10 cubits, the stated dimensions of the Holy of Holies within Moses'Tabernacle according to the Bible.