William Baker’s geometry axiom will help you find the center of any large circle. Draw two straight lines at least a foot long on the circle’s periphery.
Circle Center in Seconds
Reader William Baker’s geometry axiom will help you find the center of any large circle. Draw two straight lines at least a foot long (lines 1 and 2) anywhere on the circle’s periphery. Find the center of lines 1 and 2, and, with a framing square, draw perpendicular lines (lines 3 and 4) across the circle. The intersection of 3 and 4 is dead center.