ok so there is a raffle with 200 spots and i buy 28 spots and there are 5 rounds each round different price what are the chances of me winning one of those 5 prizes

step-by-step explanation:

a and d

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.