画O比△多5个
![别墅 5000_2838](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7329C536A6A6BB81193AD044E16546E1ABE0C9F9296216168BDF51B7EDC05472DDFB8076BD0DA734C35776A6F17FBBD05FE3340EDCC1BA533CB73EE539D002B56C11F86808F877DF1FCC5F3DB1A2EA7F5A)
别墅 5000_2838
图片尺寸5000x2838![动漫 卡通 漫画 头像 690_810](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83895C7E77FCC97BA9F27657D4F4D4CA12B0D85DEDC38DE00688CE848E2165E244EB8EB3541A4C30D9BEFADF23EBC8D0747096296A358F1290818950286EA0E2C923376EA2CAF34BD95CBC4D377F3ABC41)
动漫 卡通 漫画 头像 690_810
图片尺寸690x810![有()个有()个有()个有()个三,画一画 ①8个○形②3个△形③5个□形 4](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E830CE5364C51C51A8FAEB55E45357690DCAE16FD4EEA2490C648C11279DD42DB94C211A7AA196320CC1A7A32101FBC53C7A700246F9B5E75031449FBF6AEE597B64BAB5863BC5A4607B2138AE23EF74DCB)
有()个有()个有()个有()个三,画一画 ①8个○形②3个△形③5个□形 4
图片尺寸496x702![(本题满分8分)如图,在△abc中,ab=ac,以ab为直径的⊙o与bc交于点d,过](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A738190D3A34D1238BC2F0409D0AE44FB0C3739A7510371F43E412769AE7A084EAACAB4AB9DAA6D84D25C9B5F5B7A357E07FBA30B4E056822A72F79ADE09C1C0D7AC2FC79E8C8B061DF6925C1F88AF3E47B)
(本题满分8分)如图,在△abc中,ab=ac,以ab为直径的⊙o与bc交于点d,过
图片尺寸298x225![(2)画出右边三角形aob绕o点顺时针旋转90°后的图形._百度教育](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73B48129FC97B61150DCA89F22E374A11505AAEC9763D912CF6DFD778156762F3BFB23EBA2F16A487E9331894543633228E7E750AA5BB1B981F4EFC440194FE86B0F0B1D25362AA689DDAD022D8327DCEA)
(2)画出右边三角形aob绕o点顺时针旋转90°后的图形._百度教育
图片尺寸519x182![在△abc中,ab=ac,以ab为直径的⊙o交ab于点d,ca的延长线于⊙o相交于点](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8379E5F9BFAA6FFBB7EEFB0E4F5D3C280DDDF4174C16F4AA076EA31FF91AF6766A009D19A5CE52A6415EBF161C731579C70FD837379457FC8595A0B4BD2E1B1572CEE3DEB8BE70263807F960E909668E79)
在△abc中,ab=ac,以ab为直径的⊙o交ab于点d,ca的延长线于⊙o相交于点
图片尺寸450x310![分之五千米的三个圆形跑道汇聚于点o,若甲,乙,丙三人分别以5千米/小时](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73249A50F6C42DAEE6E51414FFFA8C835261337FF1A4FF436C2AC78E17A678174AA0B04BB520EDE89D64C036CD7D213906A11C1E02B7ADCD273E1270600CE4359A71868FF8386305754E191157F2E49088)
分之五千米的三个圆形跑道汇聚于点o,若甲,乙,丙三人分别以5千米/小时
图片尺寸233x222![(8分) 如图,在rt△acb中,∠c= 90°,ac=3cm,bc= 4cm,以bc为直径作⊙o](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9DDF2084EC61712FBCBAA676E4482F02A254F965533A33E6BB8C2DE0755EFA57E7B7D415329D6C8C1F30B508006948133DD73DD0D8D3FEA0FE105500F373FACAB5F2033670E5371C9633F38C0D2C58E75)
(8分) 如图,在rt△acb中,∠c= 90°,ac=3cm,bc= 4cm,以bc为直径作⊙o
图片尺寸241x258![△abc∽△fba, ∴∠bac=∠bfa=90°, 即oa⊥ab, 且∵点a在⊙o上](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E833355C05B6C0427A8CF2908CC51B351CF846D20612A59E48F904AFB73140A2C6E72FB6A4E7BD1FE7531E097F25DA753838EF680A90A98ECE9FB13DDD6E492D0B9D74D3D28CCF5B8C7620C3B643B6953C2)
△abc∽△fba, ∴∠bac=∠bfa=90°, 即oa⊥ab, 且∵点a在⊙o上
图片尺寸328x180![△蹇韬扑救上一轮比赛,成都蓉城](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E99B98100B8BAC75552C56ED05B9CBB11E5F12FC55B515D2224A88E5E36F201BFB3973F284ED09576C0C75617E01C92D4C4431A56CDE4C717F8337A5F093F152BB848B729132FA7192FE90ED8B73444EE0)
△蹇韬扑救上一轮比赛,成都蓉城
图片尺寸960x640![猜猜看两个5画什么](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73DB8AACD270A4E98AABA541BA0CE043FC065F94665140AC18A41D4F8E77B53D66C5B50132AB15613074C4C8E2B0A4828ED09602B336E09934190C9C54A6978AA4EC31C9686359E731721BDCB73AF955AD)
猜猜看两个5画什么
图片尺寸635x846![思维数学#一招教会你,比大小!5比4多()%,4比5少()%](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A738679BE454A24D8AC72522D2DA14C2C7DDB18F2192D4C33D868264EB96A946AE169B9AE6C022B64F495708726CDBE847E715B4F54FA7B3A90895FECF7D50A396BE2754DC9D92E6E82CD501283DA667135)
思维数学#一招教会你,比大小!5比4多()%,4比5少()%
图片尺寸1080x1920![如图,在△abc中,ab=ac,ad为△abc的高,以ad为直径的⊙o与ab,ac两边](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E997688C6C45498745A752BDDF6282051950E4C97B6F7E3908B498829D73FCA1B36F9AED44787795CAEA69FE2DE048BC58B33941893FD6356C7A75FCF8F65B71302E7AA3366875B3BB30FBD760DD76A01F)
如图,在△abc中,ab=ac,ad为△abc的高,以ad为直径的⊙o与ab,ac两边
图片尺寸302x272![△ △ o=21,△ o=17,那么△=(),o o △=()](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83A896226ECF8AC35B1D52C1ADECDDD68768CED854A6431BCF77F071E967B402D0816DE6DB59C0EEC71C93E96C2E8132FC7F02F77D9B88E17A35717E39E6172E0517DCA7F0D0DA4B54E962CF98A61C913A)
△ △ o=21,△ o=17,那么△=(),o o △=()
图片尺寸612x816![如图圆o的半径为√5,△abc内接于圆o且ab=ac=4,bd为○o的直径,求四边](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73FA5A238472EE6131D991E6965B33FE20BD6B614E6A1B117B06524B8C1D1ED371B11009E060A63F54430BAD373D9FAC04D88943F1F8F7CD617B43CC0C3F6511B1F3CECF95FADC8CDD04640942C9F5A04E)
如图圆o的半径为√5,△abc内接于圆o且ab=ac=4,bd为○o的直径,求四边
图片尺寸640x512![od⊥bc于点d,如果ab=15cm,bc=25cm,s△abc=150cm平方,求od的长](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E955638C0C69C00BD480AAF80620A14BA9AFBBBCA893A5AC2D26C8C2B19861CE9A4A8A6E83B7A1907AE875AC3D2416DF650981ECAF8AA02258C4E3D163E590B2826E85DE46B7991CD45A9F86515730EC80)
od⊥bc于点d,如果ab=15cm,bc=25cm,s△abc=150cm平方,求od的长
图片尺寸705x889![rt△obe≌rt△ocf. ∴∠5=∠6. ∴∠1 ∠6=∠2 ∠5.](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9CB9472A21A82F94BA3F8C706FE505763831DF3619D2D51530B7CA4840D777007CDA3800B68D6E07D0FFBC26FC0FA73173B0CC7FC14A1CFFD8D5DAA8AEFEA3AE2D9969C4ED2D4A1731020F0A648991EC2)
rt△obe≌rt△ocf. ∴∠5=∠6. ∴∠1 ∠6=∠2 ∠5.
图片尺寸230x282![(8分)在△abc中,以ac上一点o为圆心的⊙o与bc相切于点c,与ac相交于点d](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73577BD5BB700935F10FA0CAA21E2A77E0D767DC624316346C5A6C85866CE91E6D056F7C2C8BC646A3F35B9D8C3998A183793FDA4ABB8A51FB3ECDAFAD9066EE86D1D3128582B5643C12D32740739A701E)
(8分)在△abc中,以ac上一点o为圆心的⊙o与bc相切于点c,与ac相交于点d
图片尺寸293x157![已知,如图,△abc是⊙o的内接正三角形,点p为弧bc上一动点,探索:pa,pb](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7393467B6C2DBD08FF7A21665B99E42ACECA2F94859BE64AE9A89AA59D7326295DD7CED1558A3E0908A43A54BE3AF05C43E04FB1F88DE725CD69949F0FBA85CB9D50BFC870B85044400EEACEA32EE75AA4)
已知,如图,△abc是⊙o的内接正三角形,点p为弧bc上一动点,探索:pa,pb
图片尺寸203x184![如下图,8×8方格纸上的两条对称轴ef,mn相交于中心点o,对△abc分别作](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73F2200E3C62933AE3BC7322900E08DB7977418C973D2040FF6F510DCE5F2E2826E40A7DDC1596A22C8066D6F32EE654076DE124A38498F8C2C14EF35C4679266BDE7DEBEF7D663C969835EEACDDFC194D)
如下图,8×8方格纸上的两条对称轴ef,mn相交于中心点o,对△abc分别作
图片尺寸181x178