Câu 1:Cho Ox và Oy là 2 tia đối nhau.Trên nửa mặt phẳng bờ là đường thẳng xy vẽ 2 tia Om và On sao cho góc xOm =90 độ, góc yOn = 35 độ a)Trog 3 tia OX,Om,On tia nào nằm giữa 2 tia còn lại? vì sao ? b)Tính số đo góc mOn Câu 2:Trên cùng 1 nửa mặt phẳng bờ chứa tia Ox vẽ 2 tia Oy và Oz sao cho góc xOy=30 độ,góc xOz=120 độ,trên nửa mặt phằng bờ Oy chưa tia Ot ,vẽ góc xOt =50 độ a)Tính số đo góc yOz b)Trong 3 tia Oy,Oz và Ot tia nào nằm giữa 2 tia còn lại? c)Tính góc zOt và xOt Câu 3:Vẽ liên tiếp các hình theo các cách diễn đạt sau: a) Vẽ góc xOy =110 độ b)Vẽ góc yOt kề bù với góc xOy TÂT CẢ CÁC BÀI ĐỀU PHẢI CÓ HÌNH VẼ VÀ LỜI GIẢI (BÀI 3 CHỈ CẦN HÌNH VẼ)

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