If ... the square of (the x-coordinate of the point minus the x-coordinate of the center of the circle) added to the square of (the y-coordinate of the point minus the y-coordinate of the center of the circle) is equal to the square of the circle's radius, then the point is on the circle.
Often Ordered pairs are used to do that
The centre of a coordinate plane is the point (0,0), also called the origin.
Cartesian coordinate system
The center of the cartesian coordinate plane is called the origin and is located at the point (0,0), where the x and y axis meet.
The center of a coordinate plane is called the origin. The origin is the ordered pair (0,0).
Equation of any circle, with any radius, and its center at any point: [ x - (x-coordinate of the center) ]2 + [ y - (y-coordinate of the center) ]2 = (radius of the circle)2
The center point is 0,0.. Hope I helped
A pair of numbers used to locate a point is known as a coordinate pair. In the ordinary number plain this might be (0,0) or (1.5, 4) Any two coordinate pairs allow you to define a line. Higher numbers of coordinate pairs allow you to define shapes or paths
(x - h)2 + (y - k)2 = r2 where h is the x coordinate of the center of the circle. where k is the y coordinate of the center of the circle. where x is the x coordinate of point (x,y) on the edge of the circle. where y is the y coordinate of point (x,y) on the edge of the circle. Additional assistance here: http://www.mathwarehouse.com/geometry/circle/equation-of-a-circle.php
The center of a circle is the point equidistant from all points on the circle's circumference. It is often denoted as (h, k) in the coordinate plane and is the point where the two perpendicular axes intersect. The center determines the size and position of the circle.
coordinate plane was created by the Romans