vẽ góc xOy và tia Oz nằm giữa hai tia Ox và Oy. Làm thế nào để chỉ đo hai lần mà biết số đo của cả ba góc xOy, yOz,zOx. Em hãy giải thích?

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1. He smokes so much, perhaps that’s why he can’t get rid of his cough, → ................................................................................................................................. 2. She is very shy, that’s why she doesn’t enjoy parties. → ................................................................................................................................. 3. I haven’t the right change so we can’t get tickets from the machine. → ................................................................................................................................. 4. They speak French to her, not English, so her English doesn’t improve. → ................................................................................................................................. 5. He doesn’t work overtime, so he doesn’t earn as much as I do. → ................................................................................................................................. 6. My number isn’t in the directory so people don’t ring me up. → ................................................................................................................................. 7. He is very thin perhaps that’s why he feels very cold. → ................................................................................................................................. 8. I’m fat; that’s why I can’t get through the bathroom’s window. → ................................................................................................................................. 9. He doesn’t help me, possible because I never ask him for help. → ................................................................................................................................. 10.I can’t drive so we can’t take the car. → .................................................................................................................................