Properties
- Rhombuses belong to the class of parallelograms; they are parallelograms with four congruent sides.
- The two diagonals of a rhombus are perpendicular.
- The opposite sides of a rhombus are parallel.
- A rhombus has two axes of symmetry.
Based on its properties, a rhombus belongs to the family of convex quadrilaterals, trapezoids and parallelograms.
Formulas
The perimeter
P of a rhombus with side length
c is given by : [latex]P=4c[/latex].
The area
A of a rhombus with a short diagonal [latex]d[/latex] and a long diagonal [latex]D[/latex] is given by : [latex]A=frac{Dtimes d}{2}[/latex]
