Mathematics, 17.06.2021 16:50 BluedragonKBT44

cho góc xOy kề bù góc yOx'. Biết góc xOy bằng 2 lần góc yOx'. Vẽ Oy' là tia đối của tia Oy. Tính góc xOy, yOx', x'Oy, xOy'

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cho góc xOy kề bù góc yOx'. Biết góc xOy bằng 2 lần góc yOx'. Vẽ Oy' là tia đối của tia Oy. Tính góc...