Quadrilateral formed by joining the midpoints of a rhombus is

Quadrilateral formed by joining the midpoints of any quadrilateral is always a

If the diagonals of a parallelogram are perpendicular, then it is

In the list of Euclid's  Axiom's, which  axiom is considered a "universal truth" ? 

Perimeter of a quadrilateral is _____ than sum of its diagonal.

A quadrilateral has

The figure obtained by joining the mid points of the sides of a rhombus, taken in order, is 

If in a quadrilateral only one pair of opposite sides are parallel, the quadrilateral is a

A square is a

In a parallelogram if diagonals are equal in length then it is