A quadrilateral is a polygon with four sides.
A rhombus is a quadrilateral that has 4 equal sides but has no right angles. A diagram of this shape is shown below:
The properties of a rhombus are given to be:
1) Opposite angles and sides are congruent.
2) Opposite sides are parallel.
3) Adjacent angles are supplementary.
4) The diagonals bisect each other.
5) The diagonals intersect at right angles.
