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sunstat1931
2 năm trước
Bài 3. (2 điểm) Cho xOy khác góc bẹt, phân giác Ot. Từ điểm A nằm trên tia Ox, vẽ tia Am sao cho 􏰀􏰀􏰀 􏰀 –HẾT– xAm = xOy (tia Am nằm trong xOy). a) (1đ)ChứngminhAm//Oy. b) (1đ) Kẻ tia phân giác An của xAm. Chứng minh An//Ot.
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