如图ab是⊙o的直径cd是⊙o上的两点若∠abc=70°则∠bdc的度数为 A．50°b．40°c．30°d．20° 题目和参考 Sketch Coloring Page

如图ab是⊙o的直径cd是⊙o上的两点若∠abc=70°则∠bdc的度数为 A．50°b．40°c．30°d．20° 题目和参考 Template

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anonymous

anonymous
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sketch #2856 Merry Christmas from Melany Campano Laos Komlós László

anonymous

anonymous
sketch #2856 Merry Christmas from Melany Campano Laos Komlós László

sketch #3488 cats

anonymous

anonymous
sketch #3488 cats

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anonymous

anonymous
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sketch #2464 Spongebob by sketchmaster

sketchmaster
sketch #2464 Spongebob by sketchmaster

sketch #4857 Eye by Thu Seba Piñeraa

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anonymous
sketch #4857 Eye by Thu Seba Piñeraa

sketch #1695

anonymous

anonymous
sketch #1695

sketch #2937 Spongebob by Kalana Namikaze

anonymous

anonymous
sketch #2937 Spongebob by Kalana Namikaze

sketch #1551 donara

Donara Smbatyan
sketch #1551 donara

sketch #2866 Soul Eater by Ani Chachua

anonymous

anonymous
sketch #2866 Soul Eater by Ani Chachua

sketch #5077 Light of Hope by Itz Rakhi

anonymous

anonymous
sketch #5077 Light of Hope by Itz Rakhi

sketch #3662 Angel by Alexander Volodimirovich Danilchenko

anonymous

anonymous
sketch #3662 Angel by Alexander Volodimirovich Danilchenko

sketch #1446

anonymous

anonymous
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sketch #5072

anonymous

anonymous
sketch #5072

sketch #1477 123 viva l 'algerie

anonymous

anonymous
sketch #1477 123 viva l 'algerie

sketch #4161

Hank Henry Armstrong
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Laura Agapi Asnicar
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Emin AltınKöprü
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sketch #245 Fishy

Lucy Barnard
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sketch #4221 Moi.

anonymous

anonymous
sketch #4221 Moi.

sketch #2483 Una Catrina by sketchmaster

sketchmaster
sketch #2483 Una Catrina by sketchmaster

sketch #3063

anonymous

anonymous
sketch #3063

sketch #3166 Axl Rose by Jessie Lightwood

anonymous

anonymous
sketch #3166 Axl Rose by Jessie Lightwood

sketch #4589

anonymous

anonymous
sketch #4589

sketch #5183

anonymous

anonymous
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anonymous

anonymous
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anonymous

anonymous
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sketch #871 vampire girl anime

anonymous

anonymous
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sketch #4855

anonymous

anonymous
sketch #4855

tomski如图ab是⊙o的直径cd是⊙o上的两点若∠abc=70°则∠bdc的度数为 a．50°b．40°c．30°d．20° 题目和参考 coloring

如图AB是⊙O的直径点C为弧BD的中点CF为⊙O的弦且CF⊥AB垂足为E连接BD交CF于点G连接CDADBF1求证 sketch template

$如图AB是⊙O的直径C是$widehat{BG}$的中点CD⊥AB于DBG交CDAC与EF．求证�CD=$frac{1}{2 sketch template$

如图已知AB是⊙O的直径点CD在⊙O上且AB=10AC=8．1如果OE⊥AC垂足为E求OE的长2求tan∠ADC的值 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PAC=PC∠COB=2∠PCB．1求证PC是⊙O的切线 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AB是⊙O的直径BC与⊙O相切于点B点D在⊙O上且OD⊥OC1∠ADB=90°理由是直径所对的圆�角是90°2若OA sketch template

如图AB是半圆⊙O的直径 ABC的两边ACBC分别交半圆于DE且E为BC的中点已知∠BAC=50°则∠C= A 55 sketch template

如图，AB是⊙O的直径，点C是⊙O上一点，点D是弧CB的中点，过点D作⊙O的切线，与AB，AC的延长线分别交于点E，F，连接AD．（1）求证 sketch template

如图，已知⊙O是 ABC的外接圆，AB是⊙O的直径，直线CD与⊙O相切于点C，DO∥AC交弦BC于点F，交优弧于点E，连接BD，BE．（1 sketch template

如图AB是⊙O的直径弦BC＝2 Cm∠ABC＝60°． 1求⊙O的直径 2若D是AB延长线上一点连结CD当BD长为多�时 sketch template

如图AB是⊙O的直径CBCD是⊙O的两条切线D为切点AC与⊙O交于点E连接BE．1求证 BEC∽ ABC2若CE＝4 sketch template

如图，AB是⊙O的直径，点C为的中点，CF为⊙O的弦，且CF⊥AB，垂足为E，连接BD交CF于点G，连接CD，AD，BF sketch template

已知如图AB是⊙O的直径AC是⊙O的弦AB=2∠BAC=30°．在图中作弦AD使AD=1并求∠CAD的度数． 题目和参考答案 sketch template

如图AB是⊙O的直径且AB=10弦MN的长为8若弦MN的两端在圆上�动时始终与AB相交记点AB 到MN的距离分别为h1h2则 sketch template

如图已知AB是⊙O的直径C是圆上一点延长BC至D使CD=BC连接AD过C作CE⊥AD于EBE交⊙O于F．求证EF•EB=AE sketch template

用�量法证明直径所对的圆�角是直角百度教育 sketch template

如图，AB是⊙O的直径，C是圆上一点，弦CD⊥AB于点E，且DC=AD．过点A作⊙O的切线，过点C作DA的平行线，两直线交于点F，FC的延长线 sketch template

如图，AB为⊙O的直径，点C为 下方的一动点，连结OC，过点O作OD⊥OC交BC于点D，过点C作AB的垂线，垂足为F，交DO的延长线于点E。 sketch template

如图AB是⊙O的直径CD是⊙O上的两点若∠ABC=70°则∠BDC的度数为 A．50°B．40°C．30°D．20° 题目和参考 sketch template

如图AB是⊙O的直径点C在BA的延长线上直线CD与⊙O相切于点D弦DF⊥AB于点E线段CD=10连接BD1求证∠CDE=2∠ sketch template

如图已知AB为⊙O的直径AB=2AD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ADBE于点MN sketch template

如图AB是⊙O的直径∠ACD=45°∠ADC=30°．1∠ABD=45°．2求证AD=BD．3若AC=2求⊙O的半径 sketch template

如图已知BC是⊙O的直径AC切⊙O于点CAB交⊙O于点DE为AC的中点连结DE．1若AD=DBOC=5求切线AC的长2 sketch template

如图，AB是⊙O的直径，点C是⊙O上一点，AD和过点C的切线互相垂直，垂足为D，直线DC与AB的延长线相交于P．弦CE平分∠ACB，交直径AB sketch template

如图，AB是半圆O的直径，C是半圆O上一点（不与点A、B重合），D是AC的中点，DE⊥ AB于点E，过点C作半圆O的切线，交ED的延长线于 sketch template

如图AB是⊙O的直径BC是⊙O的弦半径OD⊥BC垂足为E若BC=6DE=3 1图中有很多结论例如OA=OC=OD=OB等 sketch template

如图AB是⊙O的直径OD⊥AC于点DBC=6cm则OD= Cm． 3 解析试题解析∵OD⊥AC于点D ∴AD=CD 又∵OA sketch template

如图⊙O的直径AB与弦AC的夹角为30°切线CD与AB的延长线交于点D．若⊙O的半径为3则CD的长为 ． 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AB=4点M是OA的中点过点M的直线与⊙O交于CD两点．若∠CMA=45°则弦CD的长为$sqrt{14 sketch template

如图AB为⊙O的直径点C是⊙O上的一点CD⊥AB垂足为点DCF⊥AF且CF=CDAF交⊙O于点EBE交AC于点M．1求证 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AB是圆O的直径O为圆心ADBD是半圆的弦且∠PDA=∠PBD．延长PD交圆的切线BE于点E1判断直线PD是否为⊙O的切线 sketch template

如图已知AB是⊙O的直径CD是弦且CD⊥ABBC=6AC=8则sin∠ABD的值是ABCD——青夏教育精英家教�—— sketch template

如图AB是⊙O的直径∠ABC=30OA=2 则BC长为A．2 B．2 C．4D．——青夏教育精英家教�—— sketch template

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