Question

let A, b be the centers of two circles of equal radii, draw them so that each one of them passes through the centers of the other. Let them in serted at c and d. Examine weather AB and CD are right?​

Answer 1

Let us draw two circles of same radius which are passing through the centres of the other circle.

Here, point A and B are the centres of these circles and these circles are intersecting each other at point C and O.

In quadrilateral ADBC,

AD=AC(Radius of circle centered at A)

BC=BD(Radius of circle centered at B)

As radius of both circles are equal, therefore, AD=AC=BC=BD

Hence, ADBC is a rhombus and i an rhombus, the diagonals bisect each other at 90

o

.

Hence,

AB

and

CD

are at right angles.

solution