lvlinh38 lvlinh38
  • 10-01-2024
  • Mathematics
contestada

. Cho tam giác ABC. M là điểm nằm trong tam giác ABC. Các điểm D, E, F lần lượt trên các cạnh BC, AC, AB sao cho các tứ giác AEMF, BDMF nội tiếp. Chứng minh rằng:
a) AEM BFM
b) Tứ giác CDME nội tiếp

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