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dangtri85.2017.2018
2 năm trước
Trên cùng một nửa mặt phẳng bờ chứa tia Ox , vẽ tia Ot,Oy sao cho góc xOt = 40° , góc xOy = 80° . a/ Tia Ot có nằm giữa hai tia Ox và Oy không? Vì sao? b/ So sánh góc tOy và góc xOt c/ Chứng tỏ rằng Ot là tia phân giác của góc xOy d/ Vẽ tia Oz là tia đối của tia Ox , vẽ tia Om nằm giữa hai tia Oy và Oz sao cho zOm = 50° .Tính số đo của góc mOy. AI LÀM GIÚP EM VỚI Ạ:)) PHẢI VẼ HÌNH NHA (KO PHẢI EM SPAM ĐÂU Ạ)
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