Clavius, Christoph, Geometria practica

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          cular{es} ad baſ{es} productæ ab aliquo puncto medio ſint æqual{es}, maior eſt. # 310
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          XVIII. Sphæra omnib{us} corporib{us} ſibi Iſoperimetris, & circa ali{as} ſphær{as} cir-
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          cumſcriptibilib{us}, quæ ſuperficieb{us} conicis contineantur, ita vt latera omnia conica ſint
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          æqualia, maior eſt. # 311
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          XIX. Sphæra quolibet cono, & cylindro ſibi Iſoperimetro maior eſt. # 313
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          XX. Dato ſemicirculo, vel quadranti, veloctauæ parti circuli, aut decimæ ſextæ,
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          &c. rectangulum conſtituere Iſoperimetrum, & æquale, ſi linea recta peripheriæ detur
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          æqualis. # 313
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          XXI. Dato triangulo cuicunque parallelogrammum æquale, atque Iſoperime-
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          trum conſtituere. # 314
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          XXII. Dato rectilineo parallelogrammum rectangulum æquale, & Iſoperime-
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          trum conſtituere. Oportet autem lat{us} quadratirectilineo æqualis mai{us} non eſſe ſemiſ@
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          ſe dimidiati ambit{us} dati rectilinei. # 316
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            <emph style="sc">Appendix</emph>
          De circulo per lineas quadrando. # 317
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            <emph style="sc">Qvadratvra</emph>
          Arabum, quam Ioſephus Scaliger in ſuis cyclometricis
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          approbat, Alberti Dureri, & quæ Campano perperam aſcribitur, falſa eſt. # 318
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            <emph style="sc">Qvadratvra</emph>
          Hipocratis Chijper lunulas, acuta quidẽ, ſed falſa quo-
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          que eſt. # 318
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          I. QVADRATRICEM lineam deſcribere. # 320
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          COROLLARIVM. Si ex centro Quadratricis recta ducatur ſecans
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          quadrantem, & quadratricem: ita ſe habebit arcus quadrantis ad eius arcum
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          abſciſſum, vtſemidiameter ad perpendicularem ex puncto quadratricis demiſ-
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          ſam. # 323
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          II. Siquadrantis, & quadratricisidem centrum ſit: erunt arcus quadran-
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          tis, ſemidiameter, & baſis quadratricis continuè proportionales. # 324
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          COROLLARIVM I. Rectam reperire arcui quadrãtis, ac proinde &
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          ſemicircumferentiæ, immo & toti circumferentiæ æqualem. # 325
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          COROLLARIVM II. Si baſis Quadratricis ſtatuatur ſemidiameter
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          alicuius circuli: erit eius latus quartæ parti circumferentiæ illius circuli æquale,
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          &c. # 326
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          COROLLARIVM III. Siduæ lineæ eandem proportionem habeant,
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          quam latus Quadratricis, eiuſque baſis, minor autem fiat ſemidiameter alicu-
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          ius circuli: erit maior quartæ parti circumferentiæ illius circuli æqualis, &c.
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          # 326
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          III. Dato circulo quadratum æquale conſtituere. # 327
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          FACILIS inuentio rectæ lineæ, quæ quartæ parti circumferentiæ dati cir-
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          culi ſit æqualis. # 327
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          FACILIS inuentio quadrati dato circulo æqualis. # 328
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          IV. Dato quadrato circulum æqualem deſcribere. # 329
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          COROLLARIVM. Circulum cuicunque figuræ rectilineæ æqualem:
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          Et contra, cuicunque circulo figuram rectilineam qualemcunq; æqualem con-
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          ſtituere. # 329
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          V. Datæ rectæ lineæ circumferentiam circulireperire æqualem. # 329
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