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Answer from: Quest
step-by-step explanation: h: (- 3, 6)
m: (1, - 2)
o: (7, 6)
r: (- 9, - 2)
midpoint of hm: (- 1, 2)
midpoint of or: (- 1, 2)
therefore, b is the midpoint of both diagonals bisect each other !
to prove the diagonals are perpendicular, show that the product of the slopes = - 1
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