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Isogonals of a Triangle

Published online by Cambridge University Press:  20 January 2009

J. S. Mackay
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Definition.—If tivo angles hare the same vertex and the same bisector, the sides of either angle are isogonal to each other with respect to the other angle.

Thus the isogonal of AP with respect to ∠ BAC is the image of AP in the bisector of ∠ BAC. It is indifferent whether the bisector of the interior ∠ BAC be taken, or the bisector of the angle adjacent to it; the isogonal of AP remains the same.

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 13 , February 1894 , pp. 166 - 178
Copyright
Copyright © Edinburgh Mathematical Society 1894