6 feet 8 feet Justin is helping his father build a rectangular sandbox for his little brother and sister. He has laid out the four sides of the sandbox, using two 8-foot boards and two 6-foot boards. Justin's father asks him how he knows he made the sandbox a rectangle. How could Justin reply? "It has to be a rectangle. The opposite sides are the same length." "It has to be a rectangle. I measured the diagonals to be sure they were the same length." "It has to be a rectangle. I made sure that the two 8-foot boards are parallel and that the two 6- foot boards are parallel." "It has to be a rectangle because it is not a square."
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Justin lays out the four sides of the sandbox using two 8-foot boards and two 6-foot boards. Show more…
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