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在△ABC中,AB=AC,AB的垂直平分线交AB于点D,交BC所在直线于点M(1)如图,当∠A=50°,求∠DMB的度数.(2)当∠A=80°,其他条件不变,画出图形,再求∠DMB的度数.(3)如果...
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教案备课库《七(2)年级暑假数学作业(六)》真题及答案
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如图在△ABC中AB=AC∠
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如图已知在△ABC中AB=ACAB的垂直平分线DE交AC于点E.CE的垂直平分线正好经过点B.与AC
如图已知在△ABC中AB=ACAB的垂直平分线DE交AC于点E.CE的垂直平分线正好经过点B.与AC
如图在△ABC中边AB的垂直平分线分别交ABBC于点D.E.边AC的垂直平分线分别交ACBC于点F.
如图在△ABC中AB=AC∠
=120°,BC=6cm,AB的垂直平分线交BC于点M.,交AB于点E.,AC的垂直平分线交BC于点N.,交AC于点F.,则MN的长为( )
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如图已知△ABC中AB=AC∠BAC=120°EF为AB的垂直平分线交AB于E.交BC于F.DG为A
已知△ABC中AB=ACAB的垂直平分线交AB于E.交AC所在直线于P.若∠APE=54°则∠B.=
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图1 图2 图3
探究如图①在△ABC中DE是边BC的垂直平分线交BC于点D.交AB于点E.连结CE求证CE+AE=A
如图在△ABC中AB=AC∠A.=120°BC=6cmAB的垂直平分线交BC于M交AB于EAC的垂直
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