Propositis duobus circulis, invenire punctum in jungente ipsorum centra, a quo,
cum ducetur quævis linea recta ipsos circulos secans, similis erunt segmenta.</s>
</quote>
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<quote>
<s xml:space="preserve">
Lemma I. Given two circles, find a point in the line joining their centre, from which,
when any straight line is drawn cutting those circles, the segments wil be similar.</s>