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如图,△ABC中,∠C=90°,BD是角平分线,点D在AB的垂直平分线上,若AD=4,求AC的长.
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如图△ABC中AB=ACBD是角平分线BE=BD∠A.=72°则∠DEC=_______.
如图在△ABC中∠C.=90°AD是角平分线DE⊥AB于E.且DE=3cmBD=5cm则BC=___
已知如图△ABC中∠C=90°AB=10AC=8BD为∠ABC的角平分线交AC于D.过点D.做DE垂
如图△ABC中∠B.=90°AB=BCAD是△ABC的角平分线若BD=1求DC的长.
如图在△ABC中∠C.=90°AD是∠BAC的角平分线若BC=5㎝BD=3㎝则点D.到AB的距离为.
如图所示∠1=∠2∠3=∠4下列结论中错误的是
BD是△ABC的角平分线
CE是△BCD的角平分线
∠3=∠ACB
CE是△ABC的角平分线
如图在Rt△ABC中∠C.=90°AD是△ABC的角平分线DC=3则点D.到AB的距离是
如图在△ABC中∠C.=90°AD是∠BAC的角平分线若BC=5㎝BD=3㎝则点D.到AB的距离DE
如图所示在△ABC中∠C=90°AD是∠BAC的角平分线看AB=10BC=8BD=5则△ABC的面积
学完了角平分线这节内容爱动脑筋的小明发现了一个在直角三角形中画锐角的平分线的方法在如图1—109所示
1如图1在△ABC中∠ABC的平分线BF交AC于F.过点F.作DF∥BC求证BD=DF.2如图2在△
如图△ABC中∠C.=90°AD是△ABC的角平分线DE⊥AB于E.F.在AC上BD=DF求证CF=
在Rt△ABC中∠C.=90°AD是角平分线若BC=10BD∶CD=3∶2则点D.到AB的距离是
4
6
8
10
在⊿ABC中∠C.=90角平分线AD分对边BC为BD︰DC=3︰2且BC=10cm则点D.到AB的距
如图在△ABC中∠C=90°∠A=30°BD是∠ABC的平分线.若AB=6则点D.到AB的距离是.
如图在Rt△ABC中∠C=90°AD是△ABC的角平分线DC=3则点D到AB的距离是______.
如图在△ABC中∠ACB=45°∠A.=90°BD是∠ABC的角平分线CH⊥BD交BD的延长线于H.
如图在△ABC中∠C.=90°AD是∠BAC的角平分线若BC=5㎝BD=3㎝则点D.到AB的距离DE
如图在Rt△ABC中∠C.=90°AD是△ABC的角平分线DC=3则点D.到AB的距离是______
1如图所示已知△ABC中∠ABC∠ACB的平分线相交于点O.试说明∠BOC=90°+∠A.2如图所示
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