Alexis has a rectangular piece of red paper that is 4 centimeters wide. it's length is twice it's width. she glues a rectangular piece of blue paper on top of
the red piece measuring 3 centimeters by 7 centimeters how many square centimeters of red paper will be visible on top

1. perpendicular

2. parallel

3. perpendicular

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.