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如图,AB为⊙O的直径,C为⊙O上一点,弦AD平分∠BAC,交BC于点E,AB=6,AD=5,则AE的长为 .
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如图AB为⊙O的直径C为⊙O上一点弦AD平分∠BAC交BC于点EAB=6AD=5则AE的长为
2.5
2.8
3
3.2
如图⊙O.的直径AB=10cmC.是⊙O.上一点点D.平分BCDE=2cm则弦AC=.
如图AB为⊙O.的直径AC为⊙O.的弦AD平分∠BAC交⊙O.于点D.DE⊥AC交AC的延长线于点E
如图已知AB为⊙O.的直径E.是AB延长线上一点点C.是⊙O.上的一点连结ECBCAC且∠BCE=∠
如图AB为⊙O.的直径C.为⊙O.上一点弦AD平分∠BAC交BC于点E.AB=6AD=5则AE的长为
2.5
2.8
3
3.2
如图AB为⊙O.的直径C.为⊙O.上一点弦AD平分∠BAC交BC于点E.AB=6AD=5则AE的长为
2.5
2.8
3
3.2
如图AB为⊙O的直径C为⊙O上一点AD和过C点的直线互相垂直垂足为D且AC平分∠DAB.1求证DC为
如图AB为⊙O的直径C为⊙O上一点弦AD平分∠BAC交BC于点EAB=6AD=5则AE的长为
2.5
2.8
3
3.2
如图AB为⊙O的直径C.为⊙O上一点AD和过C.点的直线互相垂直垂足为D.且AC平分∠DAB.1求证
如图AB为⊙O的直径C为⊙O上一点弦AD平分∠BAC交BC于点EAB=10AD=8则AE的长为.
如图AB为⊙O的直径C为⊙O上一点弦AD平分∠BAC交BC于点EAB=6AD=5则AE的长为.
如图AB是⊙O.的直径C.是⊙O.上一点AC平分∠BADAD⊥CD垂足为D.1求证CD是⊙O.的切线
如图△ABC内接于⊙O.AB是⊙O.的直径∠BAC=60°弦AD平分∠BAC若AD=6那么AC=.
如图AB是⊙O.的直径点C.是⊙O.上一点∠BAC的平分线AD交⊙O.于点D.过点D.垂直于AC的直
如图AB为⊙O.的直径C.为⊙O.上一点AD和过点C.的切线互相垂直垂足为D.求证AC平分∠DAB.
如图△ABC内接于⊙O.AB是⊙O.的直径∠BAC=60°弦AD平分∠BAC若AD=6那么AC=.
如图在△ABC中∠BAC=30°以AB为直径的⊙O.经过点C.过点C.作⊙O.的切线交AB的延长线于
如图点O.为Rt△ABC斜边AB上一点以OA为半径的⊙O.与BC切于点D.与AC交于点E.连接AD.
在⊙O.中AB为直径点C.为圆上一点将劣弧沿弦AC翻折交AB于点D.连结CD.1如图1若点D.与圆心
如图A.B.为⊙O.上的点AC是弦CD是⊙O.的切线C.为切点AD⊥CD于点D.若AC为∠BAD的平
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