One of the most famous works carried out by the ancient Egyptians is the construction of the pyramids, and the largest of these pyramids is "Khufu" 2900 BC.
The average error in the length of the sides is 1/4000, an error that can arise from the difference in temperature by 15 degrees Celsius Copper rods were used for measuring.
The ancient Egyptians were also able to make the four faces in the pyramid of Khufu point to the north, south, east and west, with an amazing accuracy that does not exceed 1/12 of the 90th degree.
This is an indication of the existence of sufficient mathematical knowledge and precise devices to carry out this work, but there are no mathematical texts from the old state or others before the Twelfth Dynasty (1788-2000) BC.
There was found a group of ancient Egyptian documents, which are about 36 documents in mathematics written in Egyptian, Coptic, and Greek.
In one of these documents (Rapid Papyrus), information was found indicating that the Egyptians had reached the knowledge of the area of a triangle by multiplying the length of its base by half of its side (and this is true only a right-angled triangle) as they knew that the volume of the cylinder its diameter (R) and height (h).
