Mathematics, 26.08.2021 06:50, sskibi1243

Cho ba điểm A(3;2) B(-11; 0) C(5;4)
a) Chứng minh ba điểm A, B,C tạo thành một tam giác ABC

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Cho ba điểm A(3;2) B(-11; 0) C(5;4)
a) Chứng minh ba điểm A, B,C tạo thành một tam giác ABC...