You want to mark off a square region in your yard for a patio. You use a tape measure to measure a
quadrilateral with all sides at 2.5 feet. If you don't have any way to measure the angles and only have
the tape measure, how can you ensure that the equilateral quadrilateral is actually a square and not just a
rhombus? (what property can you check that squares (rectangles) have but rhombi don't).