There is another story. At that time, people built tall pyramids, but no one knew how high they were. Someone said, "It is more difficult to measure the height of the pyramid than to climb to the sky!" " "This word reached the ears of Euclid.

He smiled and told others, "What's so hard about this? When your shadow is as long as your body, measure how long the shadow of the pyramid is, and the length is equal to the height of the pyramid! "

No benefit

More and more people come to study geometry with Euclid as their teacher. Some people come to join in the fun. They see others learning geometry, and they learn geometry themselves. Stobeus (about 500) tells another story.

A student once asked Euclid, "Teacher, what benefits will I get from studying geometry?" On reflection, Euclid asked the servant to give the students some money. Euclid said: Give him three coins because he wants to get real benefits from his study.

Geometrician

Euclid was a famous mathematician in ancient Greece and the pioneer of Euclid geometry. Euclid was born in Athens, which was the center of ancient Greek civilization. The rich cultural atmosphere deeply infected Euclid. When he was a teenager, he couldn't wait to enter Plato College.

One day, a group of young people came to Plato's Academy in the shade outside Athens. I saw that the gate of the academy was closed and there was a wooden sign hanging at the door, which read: "Those who don't know geometry are not allowed to enter!" This is a rule set by Plato himself. In order to let the students know that he attaches importance to mathematics, it confuses the young people who come to ask for advice.

Some people are thinking that I want to come here for advice because I don't know math. If I know, why am I here? Just when people looked at each other and didn't know whether to enter or retreat, Euclid came out of the crowd. He adjusted his clothes, glanced at the sign, and then decisively pushed open the door of the academy and went in without looking back.

Extended data:

Euclid was one of the most famous and influential mathematicians in ancient Greece. Euclid's Elements of Geometry has a great influence on the later development of geometry, mathematics and science, and on the whole thinking method of westerners.

The Elements of Geometry is the pinnacle of the development of ancient Greek mathematics. Euclid arranged the rich achievements accumulated in Greek geometry since the seventh century BC in strict logical system operation, making geometry an independent and deductive science.

In the system of Euclidean geometry, all theorems are derived from some basic propositions that are true without proof, that is, axioms. In this deductive reasoning, every proof of a theorem must be based on an axiom or theorem that has been proved before, and finally a conclusion is drawn. It has had a far-reaching impact on later generations.

Baidu Encyclopedia-Euclid