measure it
Draw a cord through the circle (a line through the circle, but not too close to where you imagine the center to be). With construction techniques, find the perpendicular at the center point of the cord, and draw the perpendicular. Do the same thing again starting with a different cord, and the two perpendiculars will intersect at the center of the circle.
Draw a pizza on it, then where ever you drew the pepperoni is the center.
It'll be the largest chord of the circle.
The easiest way to find the radius (measurement from the outside to the center of a circle) is to measure the diameter and divide by 2.
Draw a chord, then construct a line perpendicular to the center of the chord; it passes through the center of the circle. Do this again with a different chord and the intersection of the two perpendicular lines is the center of the circle.
# Find the center of the circle # Draw the line of the radius from the center to the circumference # Finish
No. Every circle on the sphere whose center is also the center of the sphere is a great circle. If the circle's center is not also the center of the sphere, then the circle is a small circle.
a diameter
You cannot. The circle could be located anywhere on a plane.
In both cases, because of their symmetry, the center of gravity is in the geometric center.
The center of the circle is at (9, 7) on the Cartesian plane