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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Medieval Latin triangulātiō (“triangulation”), from triangulō (“to triangulate”) + -tiō (noun-forming suffix). Triangulō is derived from triangulus (“triangular; triangle”), from trēs (“three”) + angulus (“angle; corner”). By surface analysis, triangulate + ion; cognate with French triangulation.
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Classic usage
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