MOTVS FLVIDORVM. 373 



VOs—x-^BdY') [Of:=zx+GdZ"] 



pro-7/ -{ sq—j-^-BdYypron-^ to—y+EdZy 

 iqmzzz-{-ldY^ lonzzz-^-CdZ] 



Ex his iam colliguntur latera pyramidis translatae* 



z t~(AA-\-HU-h¥F)dX" 



2; «z^cr (B B -f- 1 H- D D)^ Y* 



zn—{CQ-hGG-\-EE)dZ' 



IjnzzaAdX-VdYTMUdK-BdYf-^-iYdX-ldYT 

 i nzz{AdX~GdZ)\iEdX-^EdZy+{¥dX-CdZy 

 m n-{Dd Y-G^Z)>^B^Y-E^2)^+( I iY-CdZ)\ 



Hinc porro fecundum praecepta §. 12 definiantur 

 angulorum ad z cofinus : 



cof. IznzziK- ^^+ EJU--CP ^x ^2 



• z l. z, II, 



coimznzzy^zz^-^?^-^-Sl dYdZ. 



Quibus valoribus fubftitutis volumen pyramidis 

 zlmn dcducitur — 



f+(AA4-HH+FF) (BB+I I+DD)(CC+GG+EE) 

 I ~(AD+BH-+-Flf(CC+GG+EE) 

 i^X^Y^/Zy^-^^AG+^ H+CFrCBB+U+DD) 

 |-(DG+BE+CI)'(AA+HHi-FF) 

 i + aCAD-f BH+F I ) ( AG+EH-f CF) (DG-i-BE-f CI) 



quac forma poft (ignum radicale fi euoluatur, prae- 

 cife quadrato quant tatis K aequalis deprehenditur : 

 ita vt hoc volumea fit zz^lkdXdY dZ eiusque 



A a a 3 propte- 



