[441.] III.
[442.] IV.
[443.] V.
[444.] VI.
[445.] VII.
[446.] Corollaire.
[447.] PROPOSITION I. Probleme.
[448.] Solution.
[449.] Demonstration.
[450.] PROPOSITION II. Probleme.
[451.] Solution.
[452.] Lemme.
[453.] Demonstration.
[454.] Corollaire I.
[455.] Corollaire II.
[456.] PROPOSITION III. Probleme.
[457.] PROPOSITION IV. Théoreme.
[458.] Demonstration.
[459.] PROPOSITION V. Theoreme.
[460.] Demonstration.
[461.] PROPOSITION VI. Probleme.
[462.] Solution.
[463.] Demonstration.
[464.] PROPOSITION VII. Probleme.
[465.] PROPOSITION VIII. Probleme.
[466.] Avertissement.
[467.] Probleme I.
[468.] Probleme II.
[469.] Solution.
[470.] Maniere de décrire la Quadratrice.