https://**en.wikipedia.org**/wiki/**Non-Euclidean_geometry**

In mathematics, **non-Euclidean geometry** consists of two geometries based on axioms closely related to those specifying **Euclidean geometry**. As **Euclidean geometry** lies ...

mathworld.wolfram.com/**Non-EuclideanGeometry**.html

**Non-Euclidean Geometry**. In three dimensions, there are three classes of constant curvature geometries. All are based on the first four of Euclid's postulates, but ...

regentsprep.org/Regents/math/geometry/GG1/**Euclidean**.htm

**Euclidean Geometry** (the high school geometry we all know and love) is the study of geometry based on definitions, undefined terms (point, line and plane) and the ...

www.math.cornell.edu/~mec/mircea.html

Even without a strong mathematical background, interested readers can find excellent introductory books into the problematic of **non-Euclidean geometry**.

www.amazon.com/**Non-Euclidean-Geometry**-Roberto-Bonola/dp/1602064652

"**Non-Euclidean Geometry** is a history of the alternate geometries that have emerged since the rejection of Euclid¿s parallel postulate. Italian mathematician ROBERTO ...

cs.unm.edu/~joel/**Non**Euclid/**noneuclidean**.html

1.1 **Euclidean Geometry**: The geometry with which we are most familiar is called **Euclidean geometry**. **Euclidean geometry** was named after Euclid, a Greek mathematician ...

**www.britannica.com**/topic/**non-Euclidean-geometry**

**Non-Euclidean geometry**, literally any geometry that is not the same as **Euclidean geometry**. Although the term is frequently used to refer only to hyperbolic geometry ...

**www.encyclopedia.com**/topic/**non-Euclidean_geometry**.aspx

**non-Euclidean geometry**, branch of geometry in which the fifth postulate of **Euclidean geometry**, which allows one and only one line parallel to a given line through a ...

https://**en.wikipedia.org**/wiki/**Euclidean_geometry**

**Euclidean geometry** is a mathematical system attributed to the Alexandrian Greek mathematician Euclid, which he described in his textbook on geometry: the Elements.

**www.infoplease.com**/encyclopedia/science/**non-euclidean-geometry**.html

Introduction **non-Euclidean geometry**, branch of geometry in which the fifth postulate of **Euclidean geometry**, which allows one and only one line