Length of the rhombus side
A rhombus is a parallelogram with all sides equal. Signs of a rhombus: its two adjacent sides are equal, its diagonals intersect at right angles, one of the diagonals (bisector) divides the angles containing it in half, all heights are equal, the diagonals divide the parallelogram into four equal right triangles.
The length of the sides of the rhombus through the diagonals
The diagonal of the rhombus d1
The diagonal of the rhombus d2