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tramy1910bn
2 năm trước
Cho góc xOy có số đo bằng 120o . Trên cạnh Ox và Oy lấy tương ứng hai điểm A và B . Trên đoạn AB lấy hai điểm C và D (nằm giữa A và B) . Biết góc AOC = 30o ; góc BOD = 35o . Tính góc COB và góc COD. Vẽ hình hộ mk nhé
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