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phamthanhphuc2810
2 năm trước
Bài 2:Cho tia Ox, vẽ hai góc xOm và góc xOn trên cùng một mặt phẳng có chứa tia Ox sao cho ˆxOm = 90 o , ˆxOn = 140 o trong ba tia Ox, Om, On tia nào nào nằm giữa hai tia còn lại ? vì sao? Bài 3: Cho tia Ox. Vẽ 2 góc xOy và xOz trên cùng 1 nửa mặt phẳng có bờ chứa tia Ox sao cho ˆxOy= 35 0 , ˆxOz= 80 0 . Hỏi tia nào nằm giữa hai tia còn lại ? Vì sao ?
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