[61.] SCHOLION II.
[62.] SCHOLION III.
[63.] SCHOLION IV.
[64.] SCHOLION V.
[65.] THEOREMA.
[66.] CONSECTARIVM.
[67.] PROBLEMA I.
[68.] EXEMPLVM
[69.] PROBLEMA II.
[70.] EXEMPLVM I.
[71.] EXEMPLVM II.
[72.] EXEMPLVM III.
[73.] CONSECTARIVM.
[74.] SCHOLION I.
[75.] TABVLAE PERPENDICVLORVM ET BASIVM TRIANGVLI RECTANGVLI.
[76.] SCHOLION II. PROBLEMA III. RESOLVTIO PRIMA
[77.] RESOLVTIO SECVNDA
[78.] CONSECTARIVM.
[79.] PROBLEMA IV.
[80.] SCHOLION I.
[81.] SCHOLION II.
[82.] DEFINITIO XVII.
[83.] PROBLEMA V.
[84.] SCHOLION I.
[85.] SCHOLION II.
[86.] DEFINITIO XIIX.
[87.] CONSECTARIVM.
[88.] PROBLEMA VI.
[89.] SCHOLION.
[90.] CONSECTARIVM.