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phuonghoang8187
2 năm trước
trên cùng một nửa mặt phẳng có bờ chứa tia Ox , vẽ hai tia Oy và Oz sao cho xOy= 60 độ , góc xOz =120 độ a) trong 3 tia Ox , Oy , Oz tia nào nằm giữa 2 tia còn lại? vì sao b) so sánh yOz với xOy c) vẽ tia Ot LÀ TIA ĐỐI CỦA TIA Ox, cho biết hình vẽ có bao nhiêu góc. nêu tên các góc?
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