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SOLVTIO PROBLEMATIS 



DE 



INVENIENDO TRIANGVLO 



IN QVO RECTAE EX SINGVLIS ANGVLIS 



LATERA OPPOSITA BISECANTES 



SINT RATIONALES. 



A u c to re 



L. E F L E R O, 



1. 



Vocatis ternis Interibus 2 <r, 2 h, z c tt red^is haec 

 latera bifecantibus /, gy b^ quaeftio reducitur ad 

 refolutionem trium fequentium formularum 



26i»-l-2f^— fldl —ff 



s. c c _4- 2 aa — b b — gg 

 s.aa-\-ibb — cc — hb. 



2. Hinc difFerentiis fumendis fequitur fbre : 

 Ubb-aa)-ff-gg\ :i{cc-bb)-gg-hh', :^{cc-aa)-ff-bh 

 {VA ff-\-%aa—gg-\-:>,hb—hh-\-^cc^ 



Cum autem {\\. ff—ihb-\-ii.cc—aay habebimus, 

 ff-\-:^aazzgg-\-%hb — hh-\-:^a—i{aa-\-bb-\-cc). 



3. Summa porro noftrarum trium formularum 

 praebet : 



Y a ita 



