IMPORTANT DEFINITIONS OF CIRCLES

CIRCLE- Set of points at the same distance (equidistant) to a point called center ( the line).

CIRCUNFERENCE-It is the full length of a circle. 

CENTER- It is the point equidistant to any of the point on a circle.

RADIUS- It is the length of a line segment from the center to an other part of the circle.

DIAMETER-: A line segment that passes through the center and conects two points of a circle.

CHORD- It is a line segment conect two different points of the circle and don´t pass to the center.

ARC- Line segment of a circle.