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如图，矩形ABCD的对角线AC与BD交于点O，过点O作BD的垂线分别交AD，BC于E，F两点．若AC＝4，∠AEO＝120°，则FC的长度为（ ）
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如图已知菱形ABCD中对角线ACBD相交于点O.过点C.作CE∥BD过点D.作DE∥ACCE与DE相
如图在矩形ABCD中对角线AC.BD相交于点O.若O
= 2，则BD的长为 ( )
A.4
3
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1
如图在矩形ABCD中对角线AC与BD相交于点O.过点A.作AE⊥BD垂足为点E.若∠EAC＝2∠CA
如图矩形ABCD的对角线ACBD相交于点0过点O.作OE⊥AC交AB于E.若BC=4△AOE的面积为
如图菱形ABCD的对角线ACBD相交于点O.且AC=8BD=6过点O.作OH丄AB垂足为H.则点0到
如图在矩形ABCD中对角线AC与BD相交于点O.过点A.作AE⊥BD垂足为点E.若∠EAC=2∠CA
如图8在矩形ABCD中对角线AC与BD相交于点O.过点A.作A.E.∥BD过点D.作ED∥AC两线相
如图8在矩形ABCD中对角线AC与BD相交于点O.过点A.作AE∥BD过点D.作ED∥AC两线相交于
如图已知矩形ABCD的对角线ACBD相交于点O.过点A.作AM⊥AC过点D.作DN⊥BDAMDN相交
如图矩形ABCD的对角线AC与BD交于点O.过点O.作BD的垂线分别交ADBC于E.F.两点.若AC
1
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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
如图在矩形ABCD中对角线AC与BD相交于点O.过点A.作AE⊥BD垂足为点E.若∠EAC=2∠CA
如图在菱形ABCD中对角线AC与BD交于点O.过点C作BD的平行线过点D作AC的平行线两直线相交于点
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
如图在矩形ABCD中对角线AC与BD相交于点O.过点A.作AE⊥BD垂足为点E.若∠EAC=2∠CA
如图菱形ABCD的对角线ACBD相交于点O.且AC＝8BD＝6.过点O.作OH⊥AB垂足为H.则点O
如图在矩形ABCD中对角线AC与BD相交于点O.过点A.作AE⊥BD垂足为点E.若∠EAC=2∠CA
如图矩形ABCD的对角线ACBD相交于点O.分别过点C.D.作BDAC的平行线相交于点E.若AD=6
已知□ABCD的对角线交于O.点分别添加下列条件①∠ABC＝90°②AC⊥BD③AC＝BD④OA＝O
如图在□ABCD中对角线AC与BD相交于点O.过点O.作EF⊥AC交BC于点E.交AD于点F.连接A
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