Find the angle at which the diagonals interests in rhombus.

Complete:

The opposite anglesin the rhombus are____

 Let $A$ and $q$ are area and diagonal of rhombus, find the other diagonal $p$ .

 Complete:

In rhombus all the sides are_____. 

Fill in the blank:

A rhombusis a plane that has _____ vertices.

Which kind of triangle is formed when diagonals bisect each other in rhombus.

 Find the perimeter of rhombus whose side is s.

Find the area of rhombus whose adjacent sides are a and b.

Complete:

The opposite sides in the rhombus are____

Find the sum of two adjacent angle in rhombus.