Find the perimeter of the quadrilateral that circumscribes this circle.

Find the perimeter of the adjoining quadrilateral

Find the perimeter and area of the quadrilateral ABCD in which AB=21cm

Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle.

Prove that opposite sides of a quadrilateral circumscribing a circle subtend supplementary angles at the centre of the circle.

The lengths of three consecutive sides of a quadrilateral circumscribing a circle are 4 cm, 5cm, and 7cm respectively. Determine the length of the fourth side.

If diagonals of a cyclic quadrilateral are diameters of the circle through the vertices of the quadrilateral, prove that it is a rectangle.

Find the equation of the circle which circumscribes the triangle formed by the lines x=0,\ y=0\ a n d\ l x+m y=1.

Find the equation of the circle which circumscribes the triangle formed by the line: \ x+y+3=0,\ x-y+1=0\ a n d\ x=3

If one of the vertices of the square circumscribing the circle |z - 1| = sqrt2 is 2+ sqrt3 iota . Find the other vertices of square