Arithmetica Logarithimica . CF radius inferipti circuii vt fiat triangulum huicfimile, cuius area equctur perimetro; erunt 5,2;191,7^515,6. proportionales, & triangulum equicrurumcornprehcnfumala-teribus 7f, 7±, 6. habebit tam aream quam pcrimctrum partium 2 1*. Eodemmodo fi latera ABC fint erit triangulum equicrurum com-prehenfum a lateribus 1 o, io, 12. radius circuli inferipti 3 • 6c huic triangulo fi-mile 6\ 67 8. cuius area & perimeter 21^. Triangulum ifofcclcs recrangulum eft vnicum huius generis, cuius la-tera funt. 4 + /.8. 4 + /.B. 4+, area vero vel perimeter ef
Arithmetica Logarithimica . CF radius inferipti circuii vt fiat triangulum huicfimile, cuius area equctur perimetro; erunt 5,2;191,7^515,6. proportionales, & triangulum equicrurumcornprehcnfumala-teribus 7f, 7±, 6. habebit tam aream quam pcrimctrum partium 2 1*. Eodemmodo fi latera ABC fint erit triangulum equicrurum com-prehenfum a lateribus 1 o, io, 12. radius circuli inferipti 3 • 6c huic triangulo fi-mile 6\ 67 8. cuius area & perimeter 21^. Triangulum ifofcclcs recrangulum eft vnicum huius generis, cuius la-tera funt. 4 + /.8. 4 + /.B. 4+, area vero vel perimeter eft 12+/. 233£37_o84939£.In triangulis huiufmodi fcaleni?,fi data fuerit pc- ^ p. B rimcter., & anguus vnus fit re&us,auferantur 4 e ^\^ f\ \ j perimetro, ftrmiffis rcliqui eric Hypotcnufa , quia SSvj ( /— in triangulo re&angulo Diameter inferipti circuit,*- ^^^l^A dttiturdiffer entid Hypotenufa fcfummdcrurum, vt F^v. oftendi 19. & idcirco,cum datae fint Hy- C jpotcnufa. Loraritbmica. *i potenufa & fumma crurunijinvenientur crura per :\ Sin data? fuerint perimeter & bafis; inprimis qucrenda eft altitudo perproportions regulam. Eft cnim bafis triariguli,ad Jcmipcrimetrumj vt radiusinlcripti circuli3ad altitudinisquefictfferniflem. inventa autem altitiidiric,rc-liqua omnia peraguntur,eo quo dictum eft modo,in Capite 20. Vt efto Pe-rimeter, 28. Bafis,o\ 6c HdtABC triangulum ifofcclcs ifbpcrimctrum dato/n-perba(ira^5,,5Cfint 10. Et radio ED io,defcribaturfemipcripheriacirculars ENF^Sc femipcripheria Ellciptica £ qucratur Altitudo OR. Logarithmi. AB bafis - - - - 8 909591001
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Keywords: ., bookcentury1600, bookdecade1620, bookidarithmetical, bookyear1624
