Pole and Polar 1
A and A' are conjugate points.
(OA)(OA') = r²
http://www.geogebratube.org/material/show/id/30937
_____
Pole and Polar (1 of 3):
→1. Step-by-step Construction for a pole inside and outside the circle.
2. Reduced Construction and vectors: http://www.geogebratube.org/material/show/id/34585
3. Ruslan and Ludmila: http://www.geogebratube.org/material/show/id/34586