Standard Equation Of The Circle And Its Definition

Standard equation of the circle and its definition

 

Answer:

Standard equation of the circle

(x - h)² + (y -k)² = r²

Where:

(h,k) is the point representing the center of the circle

h is the x-coordinate of the  center

k is the y-coordinate of the center

r is the radius of the circle and r > 0.

If the center of the circle is at origin, it means the center (h,k) is at (0,0).

The standard equation for the circle with center at (0, 0) is:

x² + y² = r²