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[初中数学]坐标系中的瓜豆原理——旋转相似很重要
初中数学合集51/138
![[中考数学]平面几何''胖瘦模型''，辅助线很重要！](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/260e312ede754f5386716dc18d1ca8f9~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=LBNkU8Dw%2BqW6masRAWIGUe%2FkI2c%3D)
App10:49![[初中数学]坐标系中的瓜豆原理——旋转相似很重要](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/951bf6d3f0a140229b1766a0a2b48f90~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=RCCj21IGnhV4sZMGkOG40dM2zh4%3D)
App09:51![[初中数学]四点共圆都会了，九点共圆还远吗？](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/e93acc6cb59e4a8ca3bd0dce45350d78~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=h1%2BTstq6I%2Fohmcg510V7ZXsSDFU%3D)
App07:33![[初中数学]平面几何建系法VS纯几何法，选哪个？](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/b2b066d648b84fd0bd7b34bb4bcc634a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=gI0fLFHLXr7rH4%2FSqUqUSabbuDI%3D)
App14:25![[初中数学]最小值求多了，来求一下线段最大值吧](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/a3bb87c498e64f4f99bb9389a95e6d41~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=52Mx%2BVXTFORQhAuJGNAUxJNOy5w%3D)
App05:10![[初中数学]求k·PA+PB+PC的最小值，加权费马点问题](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/89b3edd73d3342e3ac963769651a37f3~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=CrcZC2GzUoA7v0tjk9yWbCTtC6w%3D)
App06:53![[初中数学]圆周角定理中的2倍关系怎么证明？](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/2053807c1e094d90b551c7967a4d8b9e~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=4nI1qp1bbkmcSW7vsF6oqXwqIKE%3D)
App06:50![[初中数学]费马点难题警告：求3PA+4PB+5PC最小值](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/534a32ebd98c437f9144e9bf2c93d221~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=8Gwq39aym3Ny4EkVZWixNNRWlIw%3D)
App09:53![[初中数学]全军覆没的一道最值问题，构造将军饮马很重要！](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/5619ac96344145d9a22aff820dee75ed~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=VLZY8CbkWMYtulXXdQUr5c4QF%2F0%3D)
App10:08![[初中数学]垂径定理的正确打开方式，中考、高考中怎么用](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/2a75c80c7b5340a3a4d4b10fde34654c~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=C%2FfkRQ15zJSlfGWDc5%2FqzxtUOBk%3D)
App11:30![[初中数学]布罗卡尔点——等腰＋相似，原来如此，相似三角形](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/71a24bd5cb8049f299d8faaeb12a4767~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=H5xeXsS1STjaJX7CvpZZJXvpdb8%3D)
App03:31![[初中数学]加权费马点问题，为什么系数是勾股数，直击本质](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/9fe1d634810c4e70a62a7870546bd93c~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=DDzpIjY3B8bgQVabMDt17P8E1aY%3D)
App08:40![[初中数学]瓜豆原理逆运用，纯几何法解最值问题，你学废了吗？](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/93247b5a344d4f759991a1c5f6ca4dc8~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=mp0emgaPod3hIvPrhtCRi2dkGQk%3D)
App12:36![[初中数学]平面几何辅助线怎么作？寻找题干中的蛛丝马迹](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/a69424ac6bfb4c158110b3ba46f3e585~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=aDF5fjx3nC%2BsNASiXKHA1%2B66Yu0%3D)
App08:28![[初中数学]究竟是一线三垂直，还是隐形圆？代几综合](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/f815c3b7c9384029a80881cf89036987~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=pvnkJm7SGCHgxvuwFkF5seuuuvc%3D)
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App08:40![平面几何中的“海盗埋宝”模型[初中数学]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/6ad865d4be814ab7b2a5b68568475f3c~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=kSP3w11e3E73cMRBmDUkgbuCf6I%3D)
App08:51![[中考数学]反向手拉手模型](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/fd44fd2e075b4ef4a588a06d171801cb~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=ZwziOgDaq%2FIdUWk6J7og9v17T04%3D)
App09:39![[中考数学]平面几何模型——中点四边形模型](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/7b78bc4dfbb64bdda49ee7b338068a23~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=dZ0cnNZDFTSCeRy9nBHyHAJ4fUY%3D)
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App07:08![[初中数学]教材上删掉的 四点共圆 究竟多好用？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/c02559c1bd3641dd94f5ea3cf992a55d~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=6yLwnN6Yniqwpj%2Fuvlk8MmAKuoY%3D)
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App15:35![[初中数学]三线共点怎么办？三线共点必旋转](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/f6c969df820b4fb49870eea103eff833~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=9lRX15kQ1F7ne6KvhKM%2FofALZiE%3D)
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App11:01![[中考数学]反向手拉手模型是什么](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/d7b18217ff6544389af71297cfd2700e~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=N416HdhnxwGY%2Bm6tqVCIQdXxcHI%3D)
App21:23![二次函数有毒？这节课就是解药！[初中数学]](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/67d743c49d43484c8133d7204aabe8a3~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=xI3ugVuP3SoeA3uqwUvtYjsFAAs%3D)
App12:05![一节课学会隐圆问题[平面几何]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/6a941bf864f84f8b87205156049a174a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250126213232779CC4C494AD62A4B4ED&requestFrom=704&version_code=80402&x-expires=1769434353&x-signature=RSoblubt4wOPQEUNPpRsgRjTbhw%3D)
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