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A Footnote to Euclid, Book III
Published online by Cambridge University Press: 31 October 2008
Extract
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.
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- Copyright © Edinburgh Mathematical Society 1929