Arithmetica Logarithimica . lum quadrati op-politum Cj & fiarit £ C,£Fequates: refta BFvqXbHerit maius &CH mi-nus fegmentum recta? B C vel A B proportionaliter Cc£tx. Eruntque BC,BH,HC continue proportionates:quia B G Quadratum maioris fegmenti cquaturrc&angulo DH, comprehenfoa tota 6c minore fegmenco. In numeris (1 ifta Logarithmica. yy ifta cxprimerc vclimus, Quadratumrc&a? E B eft 25,6c Quadratum re£he£ C 100: ent igitur Quadratum reel a?EC vel EF 125 ; cuius nullum Iatusin numeris dari potcrit. erit igiturmains Tegmentum ^5. & fiad abfolutos nunc numeru rcduccrevol uerimus,erit/.i 2
Arithmetica Logarithimica . lum quadrati op-politum Cj & fiarit £ C,£Fequates: refta BFvqXbHerit maius &CH mi-nus fegmentum recta? B C vel A B proportionaliter Cc£tx. Eruntque BC,BH,HC continue proportionates:quia B G Quadratum maioris fegmenti cquaturrc&angulo DH, comprehenfoa tota 6c minore fegmenco. In numeris (1 ifta Logarithmica. yy ifta cxprimerc vclimus, Quadratumrc&a? E B eft 25,6c Quadratum re£he£ C 100: ent igitur Quadratum reel a?EC vel EF 125 ; cuius nullum Iatusin numeris dari potcrit. erit igiturmains Tegmentum ^5. & fiad abfolutos nunc numeru rcduccrevol uerimus,erit/.i 2 3 9887499 fere, a quo fi auferatur EBy 5: reftebitfesmentu maius 5^15*80^9887499& CH minus 3819660112501. Ha? rc&a? duorum proximorum additione5velfubdu&ioneminoris a maiore3 vtrinque con tin uata?, quoad vifum fueritjean-dem perpctuo fervabunt rationcm. vt hie vides, in numeris Algcbricis ac-curate, in abfolutis vero proxime. V 4- 11090169943 I +{ 68541019662497. 24-A5 4Z 360679774998 *26180339887499 1 I6180339887499 §IOO 4 * 6180339887499 §3819660112501 /.5-2 2 — l*J » *• 4 2360679774998 *I458980337503 4 * 9OI699437495/. Licet autem hi numeri abfoluti nonnihil deficfant a vero: potcrimus ta-men in intcgris,additione pcrpetua duorumproximorum, pervenire eoquovolumus fere, cum fumptis duobus quibufcunque pro Qua-drati e medio & oblongi comprehend a primo & tertio,(ervetur eade vbiqueper totam feriemjlicet ipfi numeri plurimu augcantur. &idcirco tres quilibctproximi,parum admodum recedunt ab ilia quara qu^rimusproportione, vc Quadratum j. oblongum 10. Quadratum 1156. oblongum 1155. 55. Quadratum 7921. oblongum 7920. Huius fe&ionis magnus eft apud Geometras vfus. Si Radius circuit feceturfroport/emi/ter^mai/u fegmentum efl latus Vecanguli eidem circulo infer if & Latus Quiaqttanguli efl maim fegmentumfubtendentis duo Ultra Quin-quanguli. & fi Dodecahedrum
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Keywords: ., bookcentury1600, bookdecade1620, bookidarithmetical, bookyear1624
