s IR ad arcum IB. Ut autem ra-dius toties fumptus quot funt punda divifionum in ar-cu IB, ad ipfum radium toties fumptum quot func pun<ûa divifionum in arcu IC , ita arcus IB ad ipfum arcumIC : crgo ex «que in tribus terminis _, ut fumina i^nuunj^ I> E T R O C H O I D E. * 40 f BA , F 3 5 G… … ÏÏî,G4,H5;,l6, &c. radium toties fumptum quotiunt punda divifionum in arcu IC, ad ipfum radiumtoties fumptum ; ita difïerentia intcr finum redum IR& fuum arcum majorem IC, ad ipfum eundem arcum,Verùm difïerentia illa fumma: fmuum & fumma: radio-rum a-qualis eftfummx linuum verforum…
Geometry · Mathematics
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