Circle is the one of the important topic of conic section along with parabola. So complete understanding is very necessary. This session covers equation of circle in various forms, intercepts of circle on axes, parametric equations of a circle, line and a circle,and equations of tangent and normal. Tangent and normal are quite important as they are frequently asked.
Pre - Reading for Circles-l
Homework for Circles-l
IIT Mathematics by M.L.Khanna Coordinate Geometry by S.L.Loney