Lucinda wants to build a square sandbox, but she has no way of measuring angles. Which of the following explains how she can make sure the sandbox is square by measuring only length?
(1 point)
Arrange four equal-length sides, so the diagonals bisect each other.
Arrange four equal-length sides, so the diagonals are equal lengths also.
Make each diagonal the same length as four equal-length sides.
Not possible, Lucinda has to be able to measure a right angle.