How did the Ancient Egyptians use the Pythagorean theorem what were they called?

The Ancient Egyptians used a form of the Pythagorean theorem, though they did not formally recognize it as such. They employed it primarily in land surveying and construction, particularly when creating right angles for building projects, such as the pyramids. The tool they used for this purpose was called a "rope knotted in 12 parts," which allowed them to create right triangles with sides in the ratio of 3:4:5. This practical application of geometry was essential for their architectural and agricultural endeavors.