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如图,已知AC,BD是菱形ABCD的对角线,那么下列结论一定正确的是( )
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教案备课库《初三年级数学自修学案(201532022A)》真题及答案
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求证菱形的两条对角线互相垂直.已知如图四边形ABCD是菱形对角线ACBD交于点O..求证AC⊥BD.
③→②→①→④
③→④→①→②
①→②→④→③
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已知菱形ABCD的面积是24cm2其中一条对角线AC长8cm则另一条对角线BD的长是________
在菱形ABCD中已知对角线AC=10BD=6那么sin=.
在菱形ABCD中对角线ACBD相交于点O..如果AC=8BD=6那么菱形的周长是_________菱
如图已知AC.BD是菱形ABCD的对角线那么下列结论一定正确的是
△ABD与△ABC的周长相等
△ABD与△ABC的面积相等
菱形的周长等于两条对角线之和的两倍
菱形的面积等于两条对角线之积的两倍
如图在▱ABCD中已知对角线AC和BD相交于点O.△AOB的周长为10AB=4那么对角线AC+BD=
如图在菱形ABCD中对角线AC.BD相交于点O.下列结论①AC⊥BD②OA=OB③∠ADB=∠CDB
①②
③④
②③
①③
如图已知AC.BD是菱形ABCD的对角线那么下列结论一定正确的是
△ABD与△ABC的周长相等
△ABD与△ABC的面积相等
菱形的周长等于两条对角线之和的两倍
菱形的面积等于两条对角线之积的两倍
如图菱形ABCD的对角线ACBD交于点O.其中AC=8BD=6以OCOB为边作矩形OBEC矩形OBE
如图已知菱形ABCD的两条对角线长分别为AC=8和BD=6那么菱形ABCD的面积为.
已知如图菱形ABCD的四边相等且对角线互相垂直平分.在菱形ABCD中对角线AC.DB相交于点O.且A
7对
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9对
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如图已知菱形ABCD的边长为5对角线ACBD相交于点O.BD=6则菱形ABCD的面积为.
如图菱形ABCD的对角线ACBD交于点O.其中AC=8BD=6以OCOB为边作矩形OBEC矩形OBE
已知▱ABCD对角线ACBD相交于点O请你添加一个适当的条件使▱ABCD成为一个菱形你添加的条件是
如图已知AC.BD是菱形ABCD的对角线那么下列结论一定正确的是.
△ABD与△ABC的周长相等;
△ABD与△ABC的面积相等;
菱形的周长等于两条对角线之和的两倍;
菱形的面积等于两条对角线之积的两倍.
.如图点O.是菱形ABCD对角线的交点DE∥ACCE∥BD连接OE已知菱形ABCD的周长为20cm则
如图已知ACBD是菱形ABCD的对角线那么下列结论一定正确的是
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△ABD与△ABC的面积相等
菱形的周长等于两条对角线之和的两倍
菱形的面积等于两条对角线之积的两倍
如图菱形ABCD中∠A.=60º对角线BD=8则菱形ABCD的周长等于______.
已知□ABCD的两条对角线AC.BD交于点O.且AO=2OB=1则下列结论不一定成立的是
AC⊥BD
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□ABCD的面积为8
□ABCD为菱形
已知□ABCD对角线ACBD相交于点O.请你添加一个适当的条件使□ABCD成为一个菱形.你添加的条件
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