.a W* Fiatquc A S = A a:jtcrum fiac D^ = yM. Turn ccntro S , & femidiamecro S^,defcribacur ciiculus ^ y, r/* ftcans A G in *, & A ;E in r, &cms B C in 7T, & latus D C in ? & V. Eric * polus bafis DC*&rpolus-crunsBC5 .& A poluscruris D B: fads hoc lionet/ /TtAJC ^ 2 4 JEx… … Ex pun&o C polo circuli ^ « t ducantur bina» re&ar G rg& C »e j critque ? 9 = t i> = ang. C 5 Ducatur rccfc S1« q, fiatque- q 4 = D q: Turn per 4 du-caturreda^R: critR centrum areas DC J. Similitur duca.aurrefta/STO fiatque oa = Bo: turnpera ducaturre<Sa/S«Z,critZ centrum…
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![An illustration from Perspective cilindriqve et coniqve; ov, Traicte' des apparences veuës par le moyen des miroirs cilindriques & côniques, soient conuexes ou concaues; ensemble la construction & position des figures obiectées au [sic] mesmes miroirs, afin que leurs apparences soient conformes à la volonté (1630)](https://img.insideoutlibrary.com/img/200/ia-perspectivecilin00vaul-72-16.webp)
