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His Books

Five Postulates

Important Facts

Bibliography

One of the most influential mathematicians of ancient Greece, Euclid,
flourished around 300 B.C. For his work in the field of geometry he is
known as *the father of geometry*. He created the geometry called
Euclidean Geometry. Very little is known about his life. It is believed
that he was educated at Platos academy in Athens, Greece. Most sources
believe that he lived somewere around 300 B.C. His 13 books, the
** Elements**, are some of the most famous books in the world.
He wrote them at about 300 BC. According to Proclus (410-485 A.D.) he said that Euclid came after the first pupils of Plato and lived during the reign of Ptomlemy I (306-283 B.C.). It is said that Euclid established a mathematical school in Alexandria.

Most history states that he was a kind, fair, patient man. One story that reveals something of his character, concerns a pupil that has just finished his first geometry lesson. The pupil asked what he would gain from learning geometry. So Euclid told his slave to get the pupil a coin so he would be gaining from his studies. Another story says that Ptomlemy asked the mathematician if there was an easier way to learn geometry, Euclid replied, "there is no royal road to geometry", and sent the king to study.

The * Elements* was later translated into Latin and Arabic and is one of the earliest works to survive. The first printed copy was released in 1482. During this period Euclid was respected highly as a mathematician and the

**His five postulates may be translated into the following:**

- Two points determine a line.
- A line segment extended infinitely in both directions produces a straight line.
- A circle is dertermined by a center and a distance.
- All right angles are equal to one another.
- If a straight line falling on two straight lines forms interior angles on the same side less than 180°, the two straight lines, if produced indefinitely, will meet on that side.

Euclid lived from about 330? to 275? BC. |

He wrote the 13 Elements. |

Because of his work in the field of geometry he is called
the father of geometry. |

Most geometry is so named Euclidian Geometry
because of his thirteen Elements which summarized most of the geometry during his time. |

By the 1700's the Elements was text book.the |

- Chapter One notes 2nd page
- Introduction to the works of Euclid, URL: http://www.ecomod.tamu.edu/~dcljr/euclidhs.html
- Euclid (330?-275?), Paul Golba, URL: http://www.shu/academics/arts_sci...sites/math/reals/history/euclid.html

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