Dodecagons...don't know what they are? Learn:
Physics
Dodecagons...don't know what they are? Learn:

Old fashion Midwest Ingenuity from Indiana State U. Solved Pyramid Puzzle. 

Just read great article by Joe West at Indiana State University.  He and his team might have solved the mystery of how the Pyramids of Giza were (or should have been) built! West and his team did terrific research on Dodecagons.
Previous theories of how the Egyptians moved the multi-ton rocks across the dessert ranged from dragging them across wet sand to pushing them along tracks made of rounded timbers.  Modern estimates are that the workers put 40 stones in place a day, with the largest pyramids built in about 20 years.  That's fast for 4,000 years ago!
The physics involved West and his team attaching a rope to the top of the block and measuring the force required to set the block rolling. 
The new West theory is that the Egyptians attached quarter circle rockers or essentially telephone poles to the flat surfaces of the blocks, effectively turning them into rounded cylinders, thus allowing them to be rolled. Experiments by West and his team have shown that this method allows the blocks to be moved relatively quickly with just a few men.
Their measurements indicate the largest block would only require the crew to apply force of only 0.15 times the weight of the stone to pull the rope wrapped around the block.
This approach involves strapping wooden rods to a solid block, turning its profile from a square into a dodecagon, which can then be moved more easily by rolling.
“View 40 Centuries from the Tops of the Pyramids”
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