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Mathematics 9 Online
OpenStudy (anonymous):

which one is wrong If a rectangle is a square, then its diagonals are perpendicular. If a quadrilateral is a square, then its diagonals are perpendicular.

OpenStudy (anonymous):

first one i think

OpenStudy (anonymous):

|dw:1335928934161:dw| draw the diagonal and see

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

na 2 thx

OpenStudy (anonymous):

|dw:1335929014688:dw| so the diagonals are not perpendicular

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