[" 4.If a line intersects two concentric circles (circles "],[" with the same centre) with centre "O" at "A,B,C" and "],[" D,prove that "AB=CD" (see Fig."10.25)]

If a line intersects two concenteric circles (circles with the same centre) with center O at A,B,C and D, prove that AB=CD (see figure).

In Figure,l is a line intersecting the two concentric circles,whose common centre is O, at the points A,B,C and D. Show that AB=CD

In Figure,l is a line intersecting the two concentric circles,whose common centre is O, at the points A,B,C and D. Show that AB=CD

In Figure, l is a line intersecting the two concentric circles, whose common centre is O , at the points A ,B ,C and D . Show that A B=C Ddot

In Figure, l is a line intersecting the two concentric circles, whose common centre is O , at the points A ,\ B ,\ C\ a n d\ D . Show that A B=C Ddot

In the figure given below,AD is a diameter of a circle with centre O.If AB II CD,prove that AB=CD

Two cocentric circle common centre O. A line 'l' intersects these circle A,B,C and D. Prove that AB = CD.

Two circle with centres A and B intersect at C and D. Prove that /_ACB=/_ADB

A straight line intersects thethree concentric circles at A, B, C. if the distance of line from the centre of the circles is 'P', prove that the area of the triangle formed by tangents to the circle at A, B, C is ((1)/(2P).AB.BC.CA) .