[51.] COROLL. III.
[52.] THEOR. VI. PROP. XIV.
[53.] COROLLARIVM.
[54.] THEOR. VII. PROP. XV.
[55.] THEOR. VIII. PROP. XVI.
[56.] THEOR. IX. PROP. XVII.
[57.] MONITVM.
[58.] THEOR. X. PROP. XVIII.
[59.] Definitiones Secundæ. I.
[60.] II.
[61.] III.
[62.] IV.
[63.] V.
[64.] VI.
[65.] VII.
[66.] VIII.
[67.] IX.
[68.] THEOR. XI. PROP. XIX.
[69.] COROLL. I.
[70.] COROLL. II.
[71.] COROLL. III.
[72.] COROLL. IV.
[73.] COROLL. V.
[74.] COROLL. VI.
[75.] PROBL. VI. PROP. XX.
[76.] COROLL. I.
[77.] COROLL. II.
[78.] PROBL. VII. PROP. XXI.
[79.] MONITVM.
[80.] THEOR. XII. PROP. XXII.