Applying the Pythagorean Theorem: Equation of the circle

One of the first applications that can be found in the Pythagorean theorem, is its use in determining the equation of a circle.

Metric relationship between the two legs of a right triangle are essentially the expression of the concept of Euclidean measure.

The points of a circle are equidistant from the center of the (O).

A circle is the locus of points in a plane equidistant from a fixed point and coplanar another call center in a constant amount called radio.(W)