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Discussion on Tangency in Elementary Geometry

Published online by Cambridge University Press:  20 January 2009

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The following communication gives a summary of the opening paper by Mr G. Lawson and of the remarks by various members who afterwards took part in the discussion. The question at issue was how to treat definitions and properties of the tangent to a plane curve in teaching beginners.

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 44 , February 1925 , pp. 47 - 54
Copyright
Copyright © Edinburgh Mathematical Society 1925

References

* i.e. The method using the condition that a quadratic equation should have equal roots. Descartes first used this method in geometry.