Arithmetica Logarithimica . us quadratum multiplicet fa&us erit qua-dratus: & latus fa&i eritfavtus a lateribus eorundem quadratoruni. & idcirco66 latus continue fadti afemiperimetro&reliquis,eritfacT:usafeiniperimetroin radium circuli inferipti: qui femper a?quatur area? trianguli. Diameter circuli circumfcripti fie habetur. Auferatur Logarithmus pcr-pendicularis ab angulo quolibet in latus oppofitum3eLogarithmisiateiumcundem angulum comprehendentium,re-liquuserit Logarithmus diametri enimin quolibet triangulo ABC;duo latera AC, C B, media proportiona-lia,inter C D pel pendicular
Arithmetica Logarithimica . us quadratum multiplicet fa&us erit qua-dratus: & latus fa&i eritfavtus a lateribus eorundem quadratoruni. & idcirco66 latus continue fadti afemiperimetro&reliquis,eritfacT:usafeiniperimetroin radium circuli inferipti: qui femper a?quatur area? trianguli. Diameter circuli circumfcripti fie habetur. Auferatur Logarithmus pcr-pendicularis ab angulo quolibet in latus oppofitum3eLogarithmisiateiumcundem angulum comprehendentium,re-liquuserit Logarithmus diametri enimin quolibet triangulo ABC;duo latera AC, C B, media proportiona-lia,inter C D pel pendicularem:)& C E dia-metrum circuli circumfcripti. Quia an-guli D AC BE C aquantur per 6c & anguli CD B,C B E redti. & idcirco DC A, B C E reli-qui aequales: & triangula DCA, B C E (i-milia. ertint igitur D C, C A: B C,C E pro-portionales. Vcl fi interior perpendicula-rs magis commoda videatur, erunt FA,AB: AC,C E proportionales. /CD. 12 89208187539. prop. >C\< Logarithmus) C B. 20 Logarithmus2l666666 CcE, 216666666666 11139433523 13010299957ill3357921019 fumma omnium. CE. diameter 21 j. videpaginam Si angulum quemlibet fcire velimus. auferatur latus eidem oppoutume femiperimetro: reliquum erit teg-mentum alterutrius cruris inter an-gulum eundem & punctum in quoperipheriacirculi inferipti tangit la-tus. Erit autem hoc Tegmentum adradium circuli infcripti,vt radius cir-culi ad tangentem femiffis anguliqua?fiti. vt in triangulo ABC: ablatolatere C A 13 e femiperimetro 22,reftabit B G vel B P 9. aio
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Keywords: ., bookcentury1600, bookdecade1620, bookidarithmetical, bookyear1624
