[" If the sides of a quadrilateral touch a circle,prove that the sum of a pair of opposite sides "],[" is equal to the sum of the other pair."]

If a quadrilateral has art inscribed circle, then the sum of a pair of opposite sides equals

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 prove that AB+CD=BC+AD.

If two sides of a cyclic quadrilateral are parallel , prove that the other two sides are equal

A point O inside a rectangle A B C D is joined to the vertices. Prove that the sum of the areas of a pair of opposite triangles so formed is equal to the sum of the areas of other pair of triangles.

If each pair of opposite sides of a quadrilateral is equal, then it is a

If two sides of a cyclic quadrilateral are equal, prove that the other two sides are parallel.

A quadrilateral is a parallelogram, if its one pair of opposite sides are equal and parallel.

A quadrilateral is a parallelogram,if its one pair of opposite sides are equal and parallel.