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The equal internal bisectors theorem
Published online by Cambridge University Press: 31 October 2008
Extract
Much interest has always been aroused by this theorem, which asserts that a triangle is isosceles when two of the internal bisectors of its angles are equal. Recently McBride has given a proof, together with a selection from the numerous others which have been published. The following proof, based mainly on Euclid, Book III, differs from any I have come across, and establishes a slightly wider theorem.
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- Research Article
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- Copyright
- Copyright © Edinburgh Mathematical Society 1949
References
1 McBride, J. A., Edin. Math. Notes, No. 33 (1943), 1–13, where many references will be found.Google Scholar