[Merged by Bors] - feat(Geometry/Euclidean/../TriangleInequality): one equality case of the vector triangle inequality #32100
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PR summary ff5ab5ea65Import changes for modified filesNo significant changes to the import graph Import changes for all files
Declarations diffNo declarations were harmed in the making of this PR! 🐙 You can run this locally as follows## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>
## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>The doc-module for No changes to technical debt.You can run this locally as
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…the vector triangle inequality (#32100) This PR proves one equality case of the triangle inequality for angles. It also adds a `proof_wanted` for the bidirectional version. [#new members > Criterion for equality in the triangle inequality for angles @ 💬](https://leanprover.zulipchat.com/#narrow/channel/113489-new-members/topic/Criterion.20for.20equality.20in.20the.20triangle.20inequality.20for.20angles/near/560161005)
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This PR proves one equality case of the triangle inequality for angles. It also adds a
proof_wantedfor the bidirectional version.#new members > Criterion for equality in the triangle inequality for angles @ 💬