Definition: 1.16: Center of the Circle 

(Definition 16 from Book 1 of Euclid’s “Elements”)

And the point is¹ called the center of the circle.

Modern Definition

Euclid’s definition corresponds to today’s formulation.

¹ i.e. the point used in the proceeding Definition 15 from Book 1 of Euclid’s “Elements”.

Example

A circle with the center \(C\).

| | | | | created: 2017-02-04 10:17:14 | modified: 2019-02-15 07:00:13 | by: bookofproofs | references: [6419]

1.Definition: Concentric Circles