[71.] THEOREMA 1. PROPOS. 1.
[72.] THEOREMA 2. PROPOS. 2.
[73.] SCHOLIVM.
[74.] THEOREMA 3. PROPOS. 3.
[75.] THEOREMA 4. PROPOS. 4.
[76.] THEOR. 5. PROPOS. 5.
[77.] THEOREMA 6. PROPOS. 6.
[78.] COROLLARIVM.
[79.] THEOREMA 7. PROPOS. 7.
[80.] SCHOLIVM.
[81.] THEOR. 8. PROP. 8.
[82.] SCHOLIVM.
[83.] THEOR. 9. PROPOS. 9.
[84.] SCHOLIVM.
[85.] I.
[86.] THEOR, 10. PROP. 10.
[87.] THEOR. 11. PROP. 11
[88.] THEOR. 12. PROPOS. 12.
[89.] THEOREMA 13. PROPOS. 13.
[90.] PROBL. 1. PROP. 14.
[91.] PROBL. 2. PROPOS. 15.
[92.] SCHOLIVM.
[93.] THEOR. 14. PROPOS. 16.
[94.] SCHOLIVM.
[95.] THEOREMA 15. PROPOS. 17.
[96.] THEOR 16. PROPOS. 18.
[97.] THEOR. 17. PROPOS. 19.
[98.] THEOREMA 18. PROPOS. 20.
[99.] COROLLARIVM.
[100.] THEOREMA 19. PROPOS. 21.