Mathematical marvels, mysteries, and magic. Geometry and the eternal. Shock your friends. Determine the center of a drawn circle without a straightedge or compass. By math educator Tim Brzezinski, Tim Brzezinski, Used with permission.

@TimBrzezinski You don’t need any points either

@TimBrzezinski Actually I'm sticking with what I said, this still needs infinite points. The demonstrated symmetry is only recognized in the line between the two points, so in preforming this without the circle, there's no verification of what center you just identified.