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![Page 1: Scanned by CamScannerquantri.longbien.edu.vn/data/hnedu/thcsaimo/attachments/2017_11/tainguyen/on-tap/k8/...Bài 11 :Cho tam giác ABC vuông ð A, duðng cao AH. Kè HD vuông góc](https://reader033.fdocuments.us/reader033/viewer/2022041607/5e3506a2eec1a21d2b41b8d1/html5/thumbnails/1.jpg)
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![Page 3: Scanned by CamScannerquantri.longbien.edu.vn/data/hnedu/thcsaimo/attachments/2017_11/tainguyen/on-tap/k8/...Bài 11 :Cho tam giác ABC vuông ð A, duðng cao AH. Kè HD vuông góc](https://reader033.fdocuments.us/reader033/viewer/2022041607/5e3506a2eec1a21d2b41b8d1/html5/thumbnails/3.jpg)
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