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chuphipo
2 năm trước
Có 1 cặp góc đồng vị=nhau:E3=F2 Chứng tỏ: a)3 cặp góc đồng vị còn lại cũng=nhau b)Cặp góc so le trong=nhau c)Cặp góc trong cùng phía bù nhau:E1+F3=180 độ,E4+F2=180 độ
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