Find the perimeter of a rhombus having two consecutive vertices at (2, 5) and (-1, 3)

A rhombus is just a parallelogram, but distinct from other parallelograms, a rhombus, though its sides may be slanted, the length of each side is exactly the same.

now, what's the length of that segment from (2,5) to (-1,3)?



now, that's just that one side, however, all 4 sides in a rhombus are the same length, therefore, its perimeter is just that added four times.