如图ab为圆o的直径c为圆o上一点ad和过点c的切线互相垂直垂足为d求证ac平分角dab 知乎 Sketch Coloring Page

如图ab为圆o的直径c为圆o上一点ad和过点c的切线互相垂直垂足为d求证ac平分角dab 知乎 Template

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sketch #3539 Octo by Aristo A. Kadir

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tomski如图ab为圆o的直径c为圆o上一点ad和过点c的切线互相垂直垂足为d求证ac平分角dab 知乎 coloring

如图AB为圆o的直径c为圆o上一点AD和过点c的切线互相垂直垂足为d求证AC平分角dab 知乎 sketch template

如图AB为圆O的直径C为圆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延长AB交DC于点E．1判定直线DE与圆 sketch template

如图，AB为⊙O的直径，C为⊙O上一点，AD和过C点的切线互相垂直，垂足为D，AD交⊙O于点E．（1）求证：AC平分∠DAB；（2）若∠B sketch template

如图已知AB是⊙O的直径点C在⊙O上过点C的直线与AB的延长线交于点PAC=PC∠COB=2∠PCB．1求证PC是⊙O的切线 sketch template

如图AB为圆O的直径在圆O上取异于AB的一点C并连结BCAC．过点A作圆O的切线交直线BC于点D作∠ADC的角平分线交AB于点 sketch template

如图所示AB是圆O的直径以OA为直径的圆C与圆O的弦AD相交于点E．求证点E为AD的中点．题目和参考答案——青夏教育精英家教�—— sketch template

如图已知AB为⊙O的直径AB=2AD和BE是圆O的两条切线AB为切点过 圆上一点C作⊙O的切线CF分别交ADBE于点MN sketch template

如图AB是⊙O的直径点CD为半圆O的三等分点过点C作CE⊥AD交AD的延长线于点E．求证CE为⊙O的切线．题目和参考答案——青夏 sketch template

15．如图已知AB是⊙O的直径点C是⊙O上一点连结BCAC过点C作直线CD⊥AB于点D点E是AB上一点直线CE交⊙O于点F连结 sketch template

如图AB是⊙O的直径点C在⊙O上∠BOC=108°过点C作直线CD分别交直线AB和⊙O于点DE连接OEDE=12ABOD=2 sketch template

如图AB是圆O的直径PA垂直圆O所在的平面C是圆�上不同于AB的任意一点求证平面PAC⊥平面PBC——青夏教育精英家教�—— sketch template

已知如图AB是⊙O的直径点C是⊙O上一点CD⊥AB垂足为D点P在BA的延长线上且PC是圆O的切线．1求证∠PCD=∠POC sketch template

如图，AB为⊙O的直径，C是⊙O上一点，D在AB的延长线上，且∠DCB=∠A．E是AB下半圆弧中点，连接CE交AD于F．（1）求证：CD与⊙O sketch template

如图已知AB是圆O的直径∠DAB的平分线AC交圆O与点C作CD⊥AD垂足为点D直线CD与AB的延长线交于点E．1求证直线CD为 sketch template

如图�AB是⊙O的直径AC是弦直线EF和⊙O相切于点CAD⊥EF垂足为D．1求证∠DAC=∠BAC2若把直线EF�上平行 sketch template

百度教育 sketch template

如图AB是⊙O的直径过圆上一点D作⊙O的切线DE与过点A的直线垂直于E弦BD的延长线与直线AE交于C点．1求证点D为BC的中点 sketch template

如图，AB为⊙O的直径，C为⊙O上一点，D为AB上一点，BD=BC，过点A作AE⊥AB交CD的延长线于点E，CE交⊙O于点G，连接AC，AG sketch template

已知如图AB是⊙O的直径BC是和⊙O相切于点B的切线⊙O的弦AD平行于OC．求证DC是⊙O的切线．题目和参考答案——青夏教育精英家教�—— sketch template

如图AB为圆O的直径点C在圆�上直线PA垂直于圆所在的平面点M为线段PB的中点有以下四个�题MO∥平面PAC平面PAC⊥平面PBC sketch template

如图1AB是⊙O的直径直线l交⊙O于CD两点AE⊥直线l垂足为E 1求证AC·AD=AB·AE 2若将直线l�上平移 sketch template

如图AB为⊙O的直径C为半圆的中点⊙C的半径为2AB=8点P是直径AB上的一动点PM与⊙C切于点M则PM的取值范围为 ．题目和 sketch template

如图AB是⊙O的直径点CD是半圆弧AB上的两个三等分点AB=aAC=b则AD= A12a BB12a BCa 12bD sketch template

如图 AB是圆O的直径 AC切圆O于点A BC交圆O于点D 已知圆O的半径为6 40° 求弧AD的长（结果出卷� sketch template

如图AB是⊙O的直径C为圆上一点弧AC=60°OD⊥BCD为垂足且OD=10则AB= BC= ．题目和参考答案——青夏教育 sketch template

如图将⊙O沿弦AB折叠得到$widehat{AmB}$所在圆的切线交⊙O于点C若⊙O的半径为1当AC取最大值时则弦AB的长是 A sketch template

如图AB为⊙O的直径点CD在⊙O上．若∠AOD=30°则∠BCD的度数是度．题目和参考答案——青夏教育精英家教�—— sketch template

如图已知AB为⊙O的直径点C为半圆上的三等分点在直径AB所在的直线上找一点P连接CP交⊙O于点Q使PQ=OQ则∠CPO=20°或 sketch template

如图AB为⊙O的直径点CD在⊙O上．若∠AOD=30°则∠BCD的度数是度．题目和参考答案——青夏教育精英家教�—— sketch template

百度教育 sketch template

如图AB为⊙O的直径AD平分∠BAC交⊙O于点DDE⊥AC交AC的延长线于点EFB是⊙O的切线交AD的延长线于点F．1求证DE是 sketch template

如图AB是⊙O的直径CD是圆上的两点不与AB重合已知BC＝1 An∠ADC＝则AB＝．题目和参考答案——青夏教育精英家教�—— sketch template

如图AB是⊙O的直径CD是圆上的两点不与AB重合已知BC＝1 An∠ADC＝则AB＝．题目和参考答案——青夏教育精英家教�—— sketch template

如图AB是⊙O的直径CD是⊙O上的点∠CDB=30°过点C作⊙O的切线交AB的延长线于E则sin∠E的值为 A．12B．32C sketch template

如图�AB是⊙O的直径AC是弦直线EF和⊙O相切于点CAD⊥EF垂足为D．1求证∠DAC=∠BAC2若把直线EF�上平行 sketch template

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