Mathematics, 27.10.2021 21:40 agabu38

cho tứ giác ABCD có P, Q,M, N lần lượt là trung điểm của AD, BC. Chứng minh rằng vecto AI cộng vecto AK =3/2 vecto AC

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cho tứ giác ABCD có P, Q,M, N lần lượt là trung điểm của AD, BC. Chứng minh rằng vecto AI cộng vecto...

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