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如图,AD=AC,AB平分∠DAC,下列结论错误的是( )
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如图在△ABC中∠
=36°,AB=AC,AB的垂直平分线OD交AB于点O.,交AC于点D.,连接BD,下列结论错误的是( ) A.∠C.=2∠A
BD平分∠ABC
S.
△
BCD
=S
△
BOD
点D.为线段AC的黄金分割点
如图△ABC中∠
=30°,∠C.=90°AB的垂直平分线 交AC于D.点,交AB于E.点,则下列结论错误的是( ) A.AD=DB
DE=DC
BC=AE
AD=BC
如图已知AE∥BCAE平分∠DAC.求证AB=AC.
已知如图AC⊥BCDE⊥ABAD平分∠BAC下面结论错误的是
BD+ED=BC
DE平分∠ADB
AD平分∠EDC
ED+AC>AD
如图在直角三角形ABC中∠C.=90°∠CAB的平分线ADD交BC于点D.若DE垂直平分AB则下列结
AB=2AE
AC=2CD
DB=2CD
AD=2DE
如图在△ABC中∠C.=90°AD平分∠BACDE⊥AB于E.则下列结论①DA平分∠CDE②∠BAC
4个
3个
2个
1个
如图四边形ABCD的对角线CA平分∠BCD且AD=ABCE⊥CB于E.点O.为四边形ABCD的外接圆
其中正确的结论是 A. ①③④
①②④
②③④
①②③
如图在△ABD中AC⊥BD点C.是BD的中点则下列结论错误的是
AB=AD
AB=BD
∠B=∠D
AC平分∠BAD
如图在△ABC中∠B.=36°∠C.=72°AD平分∠BAC交BC于点D.下列结论中错误的是
图中共有三个等腰三角形
点D.在AB的垂直平分线上
AC+CD=AB
BD=2CD
如图已知AE∥BCAE平分∠DAC.求证AB=AC.
如图在△ABC中AB=AC∠
=36°,AB的垂直平分线交AC于D.,交AB于E.,给出下列结论:①∠C.=72°;②BD是∠ABC的平分线;③BC=AD;④△ADE是等腰三角形.其中正确的结论有( ) A.①②③
②③④
①②④
①③④
如图在△ABC中∠
=36°,AB=AC,AB的垂直平分线OD交AB于点O.,交AC于点D.,连接BD,下列结论错误的是
A. ∠C.=2∠A.
BD平分∠ABC
S.
△
BCD
=S
△
BOD
点D.为线段AC的黄金分割点
如图已知AE∥BCAE平分∠DAC.求证AB=AC.
如图已知AC⊥BCDE⊥ABAD平分∠BAC下面结论错误的是
BD+ED=BC
∠B.=2∠DAC
AD平分∠EDC
ED+AC>AD
如图AB=ACCF⊥AB于F.BE⊥AC于E.CF与BE交于点D.有下列结论①△ABE≌△ACF②△
1
2
3
4
如图已知AE∥BCAE平分∠DAC.求证AB=AC.
如图6417在△ABC中∠
=36°,AB=AC,AB的垂直平分线OD交AB于点O.,交AC于点D.,连接BD.下列结论错误的是( ) A.∠C.=2∠A.
BD平分∠ABC
S.
△
BCD
=S.
△
BOD
点D.为线段AC的黄金分割点
如图已知AE∥BCAE平分∠DAC.求证AB=AC.
如图AC⊥BCAD平分∠BACDE⊥AB于E.那么下列结论不正确的是A.AD平分∠CDEB.∠BAC
如图2AB=ACCF⊥AB于F.BE⊥AC于E.CF与BE交于点D.有下列结论①△ABE≌△ACF②
1
2
3
4
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