If the sides of a quadrilateral ABCD touch a circle prove that
`AB+CD=BC+AD.`

If the sides of a quadrilateral ABCD touch a circle and AB = 6 cm, CD = 5 cm, BC = 7 cm, then the length of AD in cm is :

If the sides of a quadrilateral ABCD touch a circle and AB = 6 cm, CD = 5 cm BC = 7 cm, then the length of AD (in cm) is

Qradrilateral ABCD circumscribes a circle. Prove that AB+CD=AD+BC .

If a circle touches all the sides of the quadrilateral ABCD,then show that AB+CD=BC+DA.

A quadrilateral ABCD is drawn to circumscribe a circle.Prove that AB+CD=AD+BC

A circle touches all the four sides of a quadrilateral ABCD.Prove that AB+CD=BC+DA

A circle touches all the four sides of a quadrilateral ABCD .Prove that: AB+CD=BC+DA

A quadrilateral ABCD is drawn to circumscribe a circle. Prove that AB+CD=AD+BC. or A circle touches all the four sides of a quadrilateral ABCD. Prove that AB+CD=BC+DA.