## Geometry: Common Core (15th Edition)

No. You cannot calculate the area without knowing the lengths of the diagonals. There is one exception, and that is if it is a square because then you could calculate the lengths of the diagonals by using the Pythagorean Theorem. The formula to find the area of a rhombus is: A=$\frac{1}{2}$$d_{1}$$d_{2}$