南區總受是什麼?
General 更新 2024-11-14
(2012?路南區一模)如圖,在菱形ABCD中,兩條對角線AC=12,BD=16,則此菱形的邊長為( )A.10B.8C
解:∵四邊形ABCD是菱形,∴OA=12AC=12×12=6,OB=12BD=12×16=8,AC⊥BD,∴AB=OA2+OB2=10.∴此菱形的邊長為10.故選A.
解:∵四邊形ABCD是菱形,∴OA=12AC=12×12=6,OB=12BD=12×16=8,AC⊥BD,∴AB=OA2+OB2=10.∴此菱形的邊長為10.故選A.
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