What shape has a perimeter of 16 units?

A shape with a perimeter of 16 units could be a square with each side measuring 4 units (4 + 4 + 4 + 4 = 16), a rectangle with dimensions of 3 units by 5 units (3 + 5 + 3 + 5 = 16), or a triangle with sides measuring 6 units, 5 units, and 5 units (6 + 5 + 5 = 16). These are just a few examples of shapes that could have a perimeter of 16 units.