About 3 million years ago, humans in primitive society began to count the number of knots by knotting ropes, and expressed the size of animals by the size of ropes, which is why mathematics originated from knot counting and land survey. The ancient Egyptians learned agricultural production about 5-6 thousand years ago. At that time, the agricultural system in ancient Egypt was that the king distributed square land of the same size to everyone. In fact, the word "land survey" originally meant geometry. Mathematics begins with "rope number method" and "land survey method". More than two thousand years ago, o.o.albertos, an ancient Greek living in southeastern Europe, inherited and developed these mathematical knowledge and made it a science.