题盒微课-免费下载海量北京市区级优秀微课资源及配套资料
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尺规作图1
视频地址:
https://video.cache.bdschool.cn/vd/f5add51a18c5369f972d26f2287fa665.mp4
北京市
初二数学
13
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Jul 15, 2021
尺规作图2
直角三角形全等的判定
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