1 ante ipsis del. iam A
2 ante quadrato del. tetr A
3
A duobus quadratis ae et rectangulo cuidam S
4 ante ut del. aliquot literas A
5 sxl A sxy S
6 
lqs A rectangulo yqs S
7 : ante del. 
de 
ea A rectangulum S
8 lxs A yxs S
9 lqs A ad rectangulum yqs S
10 lxs A ad rectangulum yxs S
11 ls A ys S
12 lc A yc S
13 lqs A yqs S
14 lxs A rectangulo yxs S
15 igitur A ergo S
16 A duobus quadratis S
17 ln A yn S
18 16am 2i signo posito in marg. A 16.2. S
19 xl A xy S
20 lxs A rectangulum yxs S
21 lxs A rectangulo yxs S
22 lqs qxc A rectangula yqs qxc S
23 ante rectangula del. aliquot literas A
24 lqs A rectangulum yqs S
25 A duobus quadratis S
26 lqs A rectangulum yqs S
27 A duobus quadratis S
28 los A yos S
29 vel 22am signo posito in marg. A 22 S
30 lqs A rectangulum yqs S
