# Rhombus perimeter

A rhombus is a parallelogram with all sides equal. The perimeter of a rhombus is equal to the sum of the lengths of all sides. To find the perimeter of a rhombus, it is enough to know its side or diagonals and use the formula.

**Find the perimeter of a rhombus knowing the side**

**Rhombus side**

**Find the perimeter of a rhombus knowing two diagonals**

**Diagonal of a rhombus d1**

**Diagonal of a rhombus d2**