A line is infinite, it has no beginning or end. it's length is infinite. It can only be named by the equation or a variation of y=mx+c where m is the gradient and c is the y intercept
A line segment has a specific start and end, and a length. It can be expressed giving two sets of coordinates, (the start and finish)
500 is not a perfect square number. Therefore, find the factors of 500 with the largest perfect square. In this case, 100 is the largest perfect square number in 500.
If you are simply looking for the calculator result, you will get