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Cho hbh ABCD ,O lµ giao ®iÓm 2 ®-êng chÐo AC vµ BD . Gäi M, N lÇn l-ît lµ trung ®iÓm cña OB ,OD a) CM : Tg AMCN lµ hbh b) AM c¾t BC ë E , CN c¾t AD ë F , C/m : AC, BD, E F ®ång quy
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It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest
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Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.
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Cho hbh ABCD ,O lµ giao ®iÓm 2 ®-êng chÐo AC vµ BD . Gäi M, N lÇn l-ît lµ trung ®iÓm cña OB ,OD a) C...
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