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Great Pyramid of Giza found to be slightly lopsided

The Great Pyramid of Giza is one of the most impressive structures in the world, but it also has a small design flaw. It's lopsided. The good news? That flaw could help us figure out how humans managed to build such a complicated structure with only simple tools.

Great Pyramid of Giza found to be slightly lopsided
The Great Pyramid of Giza [Credit: Nina Aldin Thune/WikiCommons]
New measurements by the Ancient Egypt Research Associates found the west side of the pyramid ended up slightly longer than the east side, making its base an imperfect square. The east side originally measured between 755.561 and 755.817 feet (230.295 to 230.373 metres), but the west side of the pyramid originally measured somewhere between 755.833 and 756.024 feet (230.378 to 230.436 metres). So the west side may have been off by up to 5.5 inches (14.1 centimetres).

Still, that's a pretty damn impressive level of precision considering the pyramid was built about 4,500 years ago.

Great Pyramid of Giza found to be slightly lopsided
Most of the original limestone casing was taken off and recycled for other building projects 
[Credit: Mark Lehner via LiveScience]
"The data show that the Egyptians possessed quite remarkable skills for their time," archaeologist Glen Dash wrote in a report. "We can only speculate as to how the Egyptians could have laid out these lines with such precision using only the tools they had. What is the exact size and orientation of the Great Pyramid?" Dash wrote in the report. "Archaeologists, scientists, engineers and mystics have sought answers for centuries."

The Great Pyramid of Giza is the largest of the three pyramids on the famous Giza Plateau in Egypt. Originally, the whole structure was cased in limestone, so it's been difficult to get an accurate measurement of it.

Great Pyramid of Giza found to be slightly lopsided
Researchers took measurements of the Great Pyramid's edges and platform, showing what one of the corners
 may have looked like when built. Researchers noticed a "corner socket," or a cutting in the rock, whose
 purpose remains unclear [Credit: Glen Dash]
To solve the mystery, Dash and other archaeologists looked for remnants of the original limestone casing. Altogether, they found 84 points where the limestone still touched the edge of the platform on which the pyramid is built.

Then the team used a method called linear regression analysis to create a model of what the shell looked like. The model showed one side may have been slightly longer than the other.

Dash thinks the builders used a grid to assemble the pyramid, but further research will help confirm this idea.

"We hope to eventually figure out how the Egyptians laid out the pyramid with such precision and, in doing so, hope to learn much about the tools and technology they had at their disposal," Dash wrote.

Source: Yahoo News [June 22, 2016]

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