May 2021 2 298 Report
ai gioi toan hinh 8 cho em hoi???

Cho tu giac ABCD,Goi E,F,G,H lan luot la trug diem cua AB,BC,CD,DA.tu giac ABCD phai co dieu kien gi de EFGH la hinh thoi,hinh vuog?em chug minh dc EFGH la hinh hinh hanh roi.giup em gap!!!Em cho 5 sao

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