In a rectangle ABCD, the diagonal AC = 10 cm then the diagonal BD =

Each angle is a rectangle is 

ABCD is a parallelogram then A - C= 

The name of the quadrilateral in which the diagonals are equal and perpendicular to each other. 

Number of independent measurements required for the construction of a quadrilateral. 

A parallelogram in which two adjacent sides are equal is a 

In parallelogram ABCD, its diagonals intersect at 'O'. If AO= 5 cm then AC= 

The three angles of a quadrilateral are 50^o, 70^o, 120^o. Find the fourth angle.

In a rhombus ABCD, its diagonals intersect at 'O'. Then AOB= 

Sum of exterior angles of a quadrilateral in right angles