1. A straight line segment can be drawn joining any two points.
2. Any straight line segment can be extended indefinitely in a straight line.
3. Given any straight line segment, a circle can be drawn having the segment as radius and one endpoint as center.
4. All right angles are congruent.
5. If two lines are drawn which intersect a third in such a way that the sum of the inner angles on one side is less than two right angles, then the two lines inevitably must intersect each other on that side if extended far enough. This postulate is equivalent to what is known as the parallel postulate.
Euclid's fifth postulate cannot be proven as a theorem, although this was attempted by many people. Euclid himself used only the first four postulates ("absolute geometry") for the first 28 propositions of the Elements, but was forced to invoke the parallel postulate on the 29th. In 1823, Janos Bolyai and Nicolai Lobachevsky independently realized that entirely self-consistent "non-Euclidean geometries" could be created in which the parallel postulate did not hold. (Gauss had also discovered but suppressed the existence of non-Euclidean geometries.)
False
Euclid wrote them
Euclid
Nothing is known of Euclid's personal life.
Pythagoras died before Euclid was born.
There are only five recognized Euclid postulates.
Euclid was the one who proved that there are only five platonic solids.
The thirteenth book of "Euclid's Elements" is called regular solids. In this final book, Euclid names and describes the properties of the five regular solids and ends it by proving no other regular solids exist.
false
False
False cuh
Euclid was Greek.
what occupations does Euclid have
Who wrote the Euclid and it was a.....
Euclid was born in Megara, In fact 100 years before the great mathematician, Euclid of Alexandria, there was a Euclid of Megara.
Euclid Ohio was named in honor of the Greek Mathematician Euclid.
The address of the Euclid Historical Museum is: 21129 North St., Euclid, OH 44117