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Triangles Triply in Perspective

Published online by Cambridge University Press:  20 January 2009

Charles M‘Leod  and
William P. Milne
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The following way of viewing triangles triply in perspective is of interest.

Two triangles ABC and PQR are said to be “in perspective” if the joins of corresponding vertices be concurrent.

Thus if U be the point of concurrency we have the following collineations:—

2. Triangles doubly in perspective are also triply in perspective.

Let the two triangles ABC and PQR be doubly in perspective, the two centres of perspective being U and V.

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 28 , February 1909 , pp. 148 - 151
Copyright
Copyright © Edinburgh Mathematical Society 1909