Official Mathlib source

EuclideanGeometry.Sphere.angle_eq_pi_div_two_iff_mem_sphere_of_isDiameter

This declaration comes from Mathlib. Follow the official immutable link below to inspect the exact upstream source; ProofAtlas does not mirror or claim authorship of it.

Exact upstream reference

Package: mathlib
Repository: https://github.com/leanprover-community/mathlib4
Commit: 5e932f97dd25535344f80f9dd8da3aab83df0fe6
Source path: Mathlib/Geometry/Euclidean/Angle/Sphere.lean:82
SHA-256: sha256:569d832b936006c5e4639cb2e83a0568d46722fdf3e1c6732635003594aa6950
Verified bytes: 31,477

Open source in Mathlib

Why there is no source download here

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