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  What it means

  The Polish rendering of QED (quod erat demonstrandum) — “which was to be proven.” Used at the end of an argument or proof to signal that the point has been established. Can be used sincerely in logical/mathematical contexts or ironically in everyday speech to say “and that proves my point.”

  Vocabulary

  • należało — it was necessary / one was supposed to (past impersonal)
  • dowieść — to prove, to demonstrate

  Grammar note

  'Czego' is the genitive of 'co', required here as the object of 'dowieść', which governs the genitive.

  Cultural context

  The phrase mirrors the Latin QED used in mathematics and philosophy, and is recognized in formal and academic contexts.

  Advanced

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