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100.23 A quartet of isogonal conjugates

Published online by Cambridge University Press:  14 June 2016

Gerry Leversha*
Affiliation:
15 Maunder Road, Hanwell, London W7 3PN e-mail: g.leversha@btinternet.com

Abstract

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Type
Notes
Copyright
Copyright © Mathematical Association 2016 

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References

1.Leversha, Gerry, The geometry of the triangle, UKMT (2013).Google Scholar
2.Radko, O. and Tsukerman, E., The perpendicular bisector construction, the isoptic point and the Simson line of a quadrilateral, Forum Geom. 12 (2012) pp. 161189.Google Scholar