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三角形的四心与平面向量，学会这些，得分轻而易举
高一数学同步课堂55/105
![平面向量的最值问题，居然需要基本不等式？[高一春季2]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/f64dc5bdb0b140ea8cebf35efc71242a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=7qvQEFgDX8B5liA1uPJc25%2FILTI%3D)
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App12:51![高中教材上没有的射影定理，大有用处！[高一春季5]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/3c663716368d41bab1f466e402f7b73f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=dcd7zaHbsQ2kf4fNO%2BY1KCCil0k%3D)
App09:29![三角形面积、周长最值，与均值不等式综合[高一春季6]](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/c2536d0b8174408b807b0e9ad26d485c~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=Cs50Sfdzi8OkRctm9hW59qehgww%3D)
App19:51![奔驰定理原来是这样啊！[高中数学]](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/afd61e1e48254af98c159abdfd37ac23~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=QUBQkO7I61F1rqXp3PpdmRSm1Kc%3D)
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App13:31![立体几何的图形嵌套及体积、表面积[高一春季7]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/268ed7dff1614207bd503158c90879ad~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=FaslDNMwgQwrKCBLZvowMQQ58WI%3D)
App18:38![[高一春季8]内切球与外接球问题，牢记几个常用模型就可以](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/c19a883a41df4844b7f74dc20209bd7a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=uoc2W4lZ9%2FZHfBMYywS4oQd57B0%3D)
App12:36![[高一春季10]立体几何面面垂直，其实也不难！](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/63da19ccb0b9416688051af8c7cd3941~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=Qj8VLLsl1CIyuSm%2B%2B6jdxoTL%2BX4%3D)
App08:29![[高一春季9]立体几何线面垂直，究竟如何理解？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/4185a9e7ae9f4ad2912d5ee319c6e9dd~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=O6cU6foOoREcuWg2u2BN0Dv32Yk%3D)
App13:41![立体几何平行篇，定理原来这样用[高一春季11]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/5ca72df5a46949108ce65089040a22f0~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=AJfx3TYrmK5QSYYXrqJ04N2ckkM%3D)
App14:50![立体几何中的线面角问题，一节课学会解决[高一春季12]](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/ebe0fb8167e947ceb50cc5be720effd8~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20240622074530B2D40D321761DFAC66FF&requestFrom=704&version_code=80402&x-expires=1750549530&x-signature=triekGAKSHMj%2BgAiWpRD%2FvfcY0s%3D)
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