oangle_eq_zero_or_eq_pi_iff_collinear — Mathlib · SciLib

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oangle_eq_zero_or_eq_pi_iff_collinear

Mathlib.Geometry.Euclidean.Angle.Oriented.Affine

URI: https://scilib.ai/kg/mathlib#EuclideanGeometry.oangle_eq_zero_or_eq_pi_iff_collinear

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