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anhhuynh10b1
2 năm trước
Bài 4: Hai đường thẳng AB và CD cắt nhau tại O sao cho AOC = 60 độ. a) Tính số đo các góc còn lại. b) Vẽ tia Ot là phân giác của AOC và Ot’ là tia đối của tia Ot. Chứng minh tia Ot’ là phân giác của BOD. GIÚP MÌNH VỚI (chỉ cần câu b thôi nhé) MÌNH ĐANG CẦN GẤP
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