Chrome，
QQ浏览器
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播放：0 时间：2025-10-11简介： -
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![[初中数学]角平分线定理的证明及使用，解中考问题大有用处](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F9edbc860fc2e87488124e351593f88071bb0f69c.jpg%40672w_378h_1c_%21web-search-common-cover)
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播放：14 时间：2024-06-19简介： -
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![北师大数学八上《1.2 一定是直角三角形吗》[张老师]【市一等奖】优质课](//imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F257d838a4ccd8504b97d61df43bf703b149222d2.jpg%40672w_378h_1c_%21web-search-common-cover)
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![[初中数学]角平分线定理的证明及使用，解中考问题大有用处](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F9edbc860fc2e87488124e351593f88071bb0f69c.jpg%40672w_378h_1c_%21web-search-common-cover)
![北师大数学八上《1.2 一定是直角三角形吗》[张老师]【市一等奖】优质课](http://imgshow.1ydt.com/img?url=%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F257d838a4ccd8504b97d61df43bf703b149222d2.jpg%40672w_378h_1c_%21web-search-common-cover)
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