Let A, B be the centres of two circles of equal radii; draw them so that each one of them passes through the centre of the other. Let them intersect at C and D.
Examine whether and are at right angles.
Steps of Construction-
1. Draw a circle with some radius; let it be 2 cm with center O.
2. Extend O to A such that OA = 2 cm. Take A as a center and OA as a radius, draw a circle. C
3. On measuring with protactor, we find AB is perpendicular to CD which means their intersection makes 90° angle.