CIRCLES | ANGLE OF INTERSECTION OF TWO CIRCLES., ORTHOGONAL INTERSECTION OF CIRCLES, PROPERTIES OF RADICAL AXIS, RADICAL CENTER, COMMON CHORD OF TWO CIRCLES | Angle of intersection of two circle and orthogonal intersection of circles, If n consecutive circle touch each other and have 2 common tangents than relation between radius of circle ., (i)The radical axis is perpendicular to the line joining the centres of the given circles., (ii)The radical axis bisects the common tangents of two circles., (iii)If two circles cut a third circle orthogonally; then the radical axis of two circle will pass through the center of the third circle ., (iv)The position of the radical axis of the two circles geometrically is as , :Introduction to Radical Center, Equation of common chord and length of common chord