In trapezium ABCD, 

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

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

ABCD is a parallelogram then A - C= 

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

The sum of the lengths of all the four sides of a quadrilateral is called its

A parallelogram in which two adjacent sides are equal is a 

The quadrilateral in which the diagonals bisect each other and they are perpendicular to each other. 

Sum of exterior angles of a quadrilateral in right angles 

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