Glenn measured a rhombus. One
of the sides was 5 in . long. What
was the perimeter of the
rhombus?

To find the perimeter of a rhombus, you simply multiply the length of one side by 4, because all sides of a rhombus are equal. Since Glenn’s rhombus has sides measuring 5 inches each, the calculation would look like this: 5 inches x 4 = 20 inches. So, the perimeter of the rhombus is 20 inches!

Did you know that the rhombus has not just four equal sides, but also opposite angles that are equal and diagonals that bisect each other at right angles? This makes the rhombus a particularly interesting shape in geometry!