圆的切线怎么画
![从圆外一点引圆的两条切线互相垂直,这点与圆的距离为6,则这圆的半径](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E928744280B4A606F37C1CF5D76137B04D3DB4244C1EBC5E2D680DD446F3AB2E1A1307E1F8BD7ED7C2D7611280A4B7E1C2CE4A21E1EF87CC19D16202CEDE29F76367118B8F0BCC77635CEABA7C047DED02)
从圆外一点引圆的两条切线互相垂直,这点与圆的距离为6,则这圆的半径
图片尺寸382x390![下面是"过圆外一点作圆的切线"的尺规作图过程.](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E90B450702AE54689E34FB0F6401B473C9A0F3D86EF73A548E1065496BA9F84DDD9AD53D83F05A824968F8B85F045BD62A06F64C386CEB2278B927330E9E1E8972AA9ECE6B2C62D411E91C20A99AB5261F)
下面是"过圆外一点作圆的切线"的尺规作图过程.
图片尺寸1126x1151![两圆的公切线课件](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83FBAC4FBCFF07FFC3133F6C41859A210393C6C05CB60ECBA7E5FA0749DF590FF3E19E2C1E865E01894806704985BA078E7EABD14155635783E0097B2238071D80AE14E58AF3F9A7C121AACA05A6F59D5F)
两圆的公切线课件
图片尺寸1500x1125![两个圆的公切线是什么呢?](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7338C798A338E1EBFDD69543256CAA22ABAB96D412E782BACEF36B72E7A873BED327FD845BABEB834BDC2E69364B893D567343D6A32F180FAA7AE81EF2599D6B425F3A84EAC388443A6518BC56F29EF105)
两个圆的公切线是什么呢?
图片尺寸438x256![尺规作图,圆的切线 - 抖音](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7381FCC3E32243B3CBE0B302E5F80F190C39AEDA8C5C9988ECE44521804D004F2967B07477CD0C14B1C2B495D3CFC8D75F9A5A7EBCEE91A8991734C13E8F514ADE999C3000D49EB9EF34C5A7C6857A693A)
尺规作图,圆的切线 - 抖音
图片尺寸1011x1306![求两圆公切线的方程](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73E2A76EA587821FE49F168424ACE949B1F260B538B71C29FBB10D6472BDA726FE8048C1CCAFA58162AFEFAA422DF8085E66294AAB6A410457FB6B7FCC6732F4BBA5C0DBB6E39E09092226D2518BD9C93F)
求两圆公切线的方程
图片尺寸456x312![一个数学问题,关于圆切线的](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9E3F77A8F4153E8223EE8764202015F4D64DBA4D15D109071C0734C0C6FB2B56837B30D6FC550D6B0BB16C06F0CF16FE7ED288CCCFCB816F3D8E8D9F3F296A84505FC91D98CA740E317DE246FF5745986)
一个数学问题,关于圆切线的
图片尺寸879x745![下面是小元设计的过圆上一点作圆的切线的尺规作图过程](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E830D4949204F7F12E0817098CB320D56D267E77A3D25EE4344528E2EE3B4F6CDA3B789572ACADEC377D85406DE7747B81EB978A3BF38533C0F7565724C297AC9A2D58189D8A3CE4F1F559D419E2C2FBDE7)
下面是小元设计的过圆上一点作圆的切线的尺规作图过程
图片尺寸1968x915![如何用圆规做已知圆的切线](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83C347CE4ACF7C77374845A2A32C14650BBF5AFA66B266E73BC4C18EFE53187378BAF8ABE92DA254813FB8E670C019E5257B70F5B5B1836C7A7F4E7D3C386734AF126FDF3C428AAEC19A9BBAB59A41C213)
如何用圆规做已知圆的切线
图片尺寸1340x675![下面是小红设计的"过圆外一点作圆的切线"的尺规作图过程.](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7371E25D0C785533059EF311B3B2C55AF72A4A0CFD431B34AEE08F33CBE3FA5E60826B7CC05641CA74F87264E62E8F11A2D93A5EE2D979F64EEA6292BDCA7D05CE6990FA620FDFA3CD75B305E9C65E8E33)
下面是小红设计的"过圆外一点作圆的切线"的尺规作图过程.
图片尺寸360x232![初中几何36模型之圆中辅助线:与圆的切线有关的辅助线](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E90959CB231394EAA8072E7246C1EC1F4CA0A0073D609C74E87F6123411BC162E33464D471666BADE87D6C81D23449DC2118CD6EADFDAE6D364DD6A8063D34535CA3F49DFA7EA176172900E3D7AC77FC4F)
初中几何36模型之圆中辅助线:与圆的切线有关的辅助线
图片尺寸640x377![为什么⊙o1与⊙o2只能画出两条不同的公共切线时,两圆相交](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8352D55F35E0D7E46965A7EDDD40A4F6F45A53912971823C9670200DF7CD024F15467F8582C4592D5CF464431839EBE25C00EA8457F8EC699EB31B5F1275F532BBE8C55E90D9DE267E40311C4E5503B53D)
为什么⊙o1与⊙o2只能画出两条不同的公共切线时,两圆相交
图片尺寸1313x750![两圆的内,外公切线](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A737D3D990EA4379C928C80806D3620EAF98C7E78310A173E939B67339A3965EC75ADB9979230F5C982BF07CF453C1D7A8CBAE08969F04CEB04E432209DD1A3C589AB831C55B7F98C7B80D5F8E8E1CADCD7)
两圆的内,外公切线
图片尺寸605x393![从一定点p向各同心圆作切线,求证:各切点共圆](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83571264A323EE0B0F04392FAC591185AC6FBA11780D55A1AAFDEB31FD9996DE900DE22198E3133979C53B356FECF91980E9F0D4E0E75D0223FBF1D9CDBD794F5FF5404505B6C539CC8061A4AE744D1298)
从一定点p向各同心圆作切线,求证:各切点共圆
图片尺寸736x476![切割线定理:从圆外一点引圆的切线和割线,切线长是这点到割线与圆交点](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9D22EE596A37454229F77BDDECCE78BD0706EE0C4E6027524831742D7D79C3BF8699F327B219465D486779491B032574FD732828CA41A1D4F279B3787E83215DB9F2E85935AB86A1291DF51C6152E9CAB)
切割线定理:从圆外一点引圆的切线和割线,切线长是这点到割线与圆交点
图片尺寸934x568![几何画板能画出圆切线的动态图么](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8314DA2E4CAE7EDF9646D88B0FB4A21F4E32F96C42488A004DB0D636D3F0ADA0B02EB98825F6FCBC251325634661CFA60944A522631C6E7D0E03A47049B275EF8F44CA0D0D9E118BA7C171BC9F30E75D4C)
几何画板能画出圆切线的动态图么
图片尺寸801x523![我们知道:过圆外一点所画的圆的两条切线长相等.](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7309B68275B3A8EC874E6A784BA2CA2C27BE4AFB8D70A2CDB1BD235725568318BDE5A7FB6416BFC67523A874D6525DD2D4A1D7CF3275A6BFB2DF4806C4FCD3E9E5015EC18D664257885F67848FE8CEB8DA)
我们知道:过圆外一点所画的圆的两条切线长相等.
图片尺寸158x166![能与这两圆都相切且半径为4cm的圆共有几个,答案上是五个,我只画出四](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9420C5BC44953FD07CD6FC789E9ADC2D5163F3F6A5D64D3AF52A91E1BBFB7BD0801737ECE3B468A7F17BB063E11DD6C873325C5A4E0A6FD720BB288DE55472DF9FCA6D4FA067B4AC85CC04C673621B343)
能与这两圆都相切且半径为4cm的圆共有几个,答案上是五个,我只画出四
图片尺寸600x497![o2;半径为r1;r2,b=r2-r1(设r2>r1):给定任意两圆的外公切线如何画?](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E99F48CF98CAF56B948B677A465B09D04134D3CAEFD5938E4A31EC85CA20A0BBA463099C6FFBA019F41EB38439891894096DF6C0FE049FE98A714777335ADC1126344B69A6558CAB49EE0D1E4E4CC80B4C)
o2;半径为r1;r2,b=r2-r1(设r2>r1):给定任意两圆的外公切线如何画?
图片尺寸1022x640![要使每个小圆的面积最大,且半径都相等.](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73252C8FA744E9F70E921658DDAA8FD2F4F5DA38C030A593827B7AA98641F277A5A1A9891B2D527D1C4B5824CAD20115F7874A5EB48D28700829C5CA61D11611916CC473B232E98B212F7DFB2B7BA03A4F)
要使每个小圆的面积最大,且半径都相等.
图片尺寸439x440