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nguyentoan18081981
2 năm trước
Vẽ tia Oz nằm giữa hai tia Ox và Oy. Dùng thước đo góc xác định số đo của các góc xOz, zOy, xOy. So sánh tổng số đo hai góc xOz và zOy với góc xOy? Mong các bạn giúp mình.
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