The General Triangle Is Unique

Joachim Breitner 📧

April 1, 2011

Abstract

Some acute-angled triangles are special, e.g. right-angled or isoscele triangles. Some are not of this kind, but, without measuring angles, look as if they were. In that sense, there is exactly one general triangle. This well-known fact is proven here formally.
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Topics

Theories of General-Triangle