Posted by Katie on Monday, December 5, 2011 at 6:23pm.
I need help on this question, I know the answer (or, at least I think I know it), but I can't think of the rest.
Bobby claims that only upright squares can have rational numbers for side lengths. Is he correct? Explain.
I got yes, he is correct, but I can't hink of an explanation besides common sense! Help, please?

Math  bobpursley, Monday, December 5, 2011 at 6:37pm
What is an upright square?

Math  Katie, Monday, December 5, 2011 at 6:42pm
On a grid, an upright square is a square that is well, upright, on one of its sides, with the sides going along the grid points.
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