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A Footnote to Euclid, Book III

Published online by Cambridge University Press:  31 October 2008

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The following two propositions are converses of Euclid III., 11 and 12.

Prop. 1. If the circumferences of two circles whose centres are A and B have a common point C lying in the straight line AB, then the circles touch each other externally at C.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1929