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Yannes

Quadrilaterals

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  • 解數雜貨店
    2020-08-15 12:14:25
    The height of △AMN, △MCN and △MBC are the same. So, their area are directly propotional to the bases. That is, △MBC = 2△AMN = 2△MCN 4△MCN = 72 MNDC = 2△MCN
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