( i y i ) 
Sed A' = o 
Ergo fecunda Columna perpeadiculans = 7*. 
3 / + 4 /^/+6 /"&c.= x 
J 1 1 .. . Am r .n 
1 ^4' -f- X /C “f" 2 A" 2. &C. 2 4 
1 ^ .11 \ It/ • ft .///' ft 
i -y 1 " i “ ” ~ 
Eft igitur < A -\- 6 A " 7 A" + 8 A" &c. ~ x + t a. 
Ec H' + i A" + r + f A"" &c. = 7 * + r 
Eft igitur ternia Columna pcrpendicularis =: i x + 74 . 
Eric iyicur v = v Hr 7 * + 7 a -+ 7 x -f {■ a 
+ r 
+ f 
+ L 
D' 
D" 
D" 
D"" 
Erie igitur y — Hr r * 4~ 1 4 -, r * * 4" , 
five 7 = ?-+ 7* b a, quod erat probandum. 
3 C =3 C' 
^c" = 4 C" 
6C"'=V B'" 
7 CT = 2- £ 
8 <y= 8 r^ +7 
Ergo a =77+ rH“jv-H & 
Etenim prima Columna pcrpendicularis = s, cx Hypothefi. 
3 C + 4 C"= + 
S B'-±-iB"+ 5 B"± 6B'"' &c.= T . 
#' + £" | B'"'&c-$. 
Eft igitur 4 fi' -+ f + 6B' 7 + 7 5 "" &c. = J + 
Sed aB'—i. 
Ergo 5 B' -j-6Z?" + 7 B' '" &c. = y + b — il 
f£"+ f B m + \ B"" &c.= 7f-f-‘J — f. 
Ergo fecunda Columna pcrpendicularis = ^ + ^ J+ ~b — t 
= 7 y + 7 b. 
Iterum* 3 £>' + 4 D" + j D " -f 6 &c- = v 
iD'|iD"+2 /)'" + 2 D"" &c. = 2^ 
Eft igitur 5 D' ~H 6 D" 4 * 7 £* ' r “f* 8 D' '' &c. = v 4 * z */. 
ec iD'tjD , '+^ v +; r& c .=>+u 
Ergo terria Columna pcrpendicularis = 7 v + 7 d 
Eft igitur + quod erat probandum. 
3 D 
