lethikhanhlinh180920 lethikhanhlinh180920
  • 26-12-2023
  • Mathematics
contestada

cho hình bình hành ABCD lấy điểm K bất kì thuộc cạnh CD đường thẳng AK lần lượt cắt BC,BD tại G,I
C/M
a) GC GK b) AD GB
___= ___ __ = ___
GB GA AK GA

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