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Triangles of triangles

Published online by Cambridge University Press:  22 September 2016

H. B. Griffiths
H. B. Griffiths*
Affiliation:
Faculty of Mathematical Studies, University of Southampton, Southampton S09 5NH
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Extract

In this article we shall study the ‘shape’ of a triangle, and its relation to the area formula

Δ = √(s(s - a)(s - b)(s - c))

that occupied the time of sixth formers long ago. In so doing we shall resurrect a little ‘Durrel-type’ geometry, and introduce some ideas from the qualitative theory of differential equations, which are becoming increasingly familiar to undergraduates.

Type
Research Article
Information
The Mathematical Gazette , Volume 65 , Issue 431 , March 1981 , pp. 10 - 19
Copyright
Copyright © Mathematical Association 1981

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References

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