The geometry (plane and solid) based on Euclid's postulates.

Geometry based on the definitions and axioms set out in Euclid's Elements.

a branch of mathematics dealing with the relationships between points, lines, polygons, etc. Named for Euclid, an ancient scholar who formulated many of the fundamental ideas still in use today

The Plane geometry we learn in high school, based upon a few ideal, smooth, symmetric shapes.

A type of geometry based on certain axioms originally stated by Greek mathematician Euclid.

The terrestrially familiar geometry of "flat space" that all of us learn in high school.

Euclidean geometry is a mathematical system attributed to the Greek mathematician Euclid of Alexandria. Euclid's text Elements was the first systematic discussion of geometry. It has been one of the most influential books in history, as much for its method as for its mathematical content.