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triangle noun

  /ˈtɹaɪəŋɡəl/ , /ˈtɹaɪˌæŋɡəl/
  • (geometry) A polygon with three sides and three angles.
  • (music) A percussion instrument made by forming a metal rod into a triangular shape which is open at one angle. It is suspended from a string and hit with a metal bar to make a resonant sound.
triangolo
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