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微练习

微练习. 三水西南二中陈伟文. 练一练. A. D. ┓. B. C. 已知△ ABC 是 Rt△,∠ABC=90 0 ,BD 是斜边 AC 上的中线. 6. (1) 若 BD=3㎝, 则 AC ＝ ______ ㎝; (2) 若∠ C=30°,AB ＝ 5㎝, 则 AC ＝ _____ ㎝, BD ＝ _____ ㎝. 10. 5. A. D. O. C. B. 练一练. 在矩形 ABCD 中，对角线 AC 与 BD 相交于点 O, 已知 AB=6 ， BC=8 ， (1) 求 AC=_______ ， BO=_______ ，

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微练习

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  1. 微练习 三水西南二中陈伟文

  2. 练一练 A D ┓ B C 已知△ABC是Rt△,∠ABC=900,BD是斜边AC上的中线. 6 (1)若BD=3㎝,则AC＝______ ㎝; (2)若∠C=30°,AB＝5㎝,则AC＝_____㎝, BD＝_____㎝. 10 5

  3. A D O C B 练一练 在矩形ABCD中，对角线AC与BD相交于点O,已知AB=6，BC=8， (1)求AC=_______，BO=_______， (2)矩形ABCD的周长是______，面积是_____。 5 10 28 48 6 8

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