C V R V A R V M. 71 



ficqiic dato arcii AB et piiiKflo P jfllgnabitur pun- 

 ifliim Q_ vt arciis PQ iicqiuilis riat arcui AB. Re- 

 pcriciitur autcm ob fignum ambiguum bina puncfta 

 Q, quorum alterum citra alterum vltra pundum P 

 ent fitum. 



CoroJI. I. 



40. lauentj valore q fimili inodo a puntfto 

 Q^ vlterus abCcindi ■ poterit arclis QK arcui AB ac- 

 qualis. Pofita enim variabili puuifto R rcfponicnt» 

 ~ r , capiatur : 



^ — ' 'y -h'- « i 4-'f i 1 



ficqnc a pundlo P fimul abrciaUctnr arcus PR da- 

 plu> arcus dati AB. 



Coroll. 2. 



41. Qiioniam r hinc duplicem obtinet valo- 

 rcm , notandum eft akcrura itcrum in p ab:rc , qu;a 

 antc animadiitrtimus cfTe : 



— g — y? — (jqt+.2 V A (A-f-; B7-4-C TT->--P 7*-t-EQ*) 



P — 7 -+- J M -^^i-y 



quare vt arcus PR euadat duplus , idem fignum 

 quod in valore iplius q fucrit cledum , in valore 

 ipfius r capi oportet. 



Coroll. 5. 



42. Pari moJo vltra R rcpcrictur punftum S, 

 vt dtnuo arcu* RS acqualis , ficque angulus PS 



triplus 



