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thuyphuoc56
2 năm trước
Trên cung một nửa mặt phẳng bờ là ox có chứa tia oy vẽ oz sao cho. a, trong ba tia tia nào nằm giữa hai tia còn lại. b,tính c,kẻ tia oz đối với oz tính góc kề bù với. d vẽ sao cho kề bù với. Tính.
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