mktz97fh6w mktz97fh6w
  • 22-11-2022
  • Mathematics
contestada


Fie punctele necoplanare A, B, C, D şi punctele M, N, P, R, mijloacele segmentelor BD, DC, CA,
respectiv AB. Arătaţi că:
a PR || (BCD);
b NP || (BDA);
c MR || (ADC).

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