Equation of circle in various forms |
Parametric Equation of a Circle |
Position of a Point with respect to Circle |
Equation of Tangent , Equation of Normal on the Circle |
Chord of Contact of Tangents |
Equation of Radical Axis of two circles |
Equation of Family of Circles , Angle of Intersection of two Circles |
External and Internal Contacts of Circles , Common Tangents to Two Circles |