[121.] 2 C*ONSECTARIUM*.

[122.] 7 THEOREMA. 15 PROPOSITIO.

[123.] DECLARATIO.

[124.] 8 THEOREMA. 16 PROPOSITIO.

[125.] DEMONSTRATIO.

[126.] 9 THEOREMA. 17 PROPOSITIO.

[127.] DEMONSTRATIO.

[128.] C*ONSECTARIUM*.

[129.] 10 THEOREMA. 18 PROPOSITIO.

[130.] C*ONSECTARIUM*.

[131.] HACTENVS RECTORVM PONDERVM GENERA DICTA SVNT; OBLI-QVORVM PROPRIETATES DEINCEPS deſcribendæ ſunt, quarum omnium genera-lem veritatem tanquam fundamentum istud theoremata complectitur. 11 THEOREMA. 19 PROPOSITIO.

[132.] DEMONSTRATIO.

[133.] 1 C*ONSECTARIUM*.

[134.] 2 C*ONSECTARIUM*.

[135.] 3 C*ONSECTARIUM*.

[136.] 4 C*ONSECTARIUM*.

[137.] 5 C*ONSECTARIUM*.

[138.] 6 C*ONSECTARIUM*.

[139.] 7 C*ONSECTARIUM*.

[140.] 8 C*ONSECTARIUM*.

[141.] 9 C*ONSECTARIUM*.

[142.] 10 C*ONSECTARIUM*.

[143.] 11 C*ONSECTARIUM*.

[144.] 12 C*ONSECTARIUM*.

[145.] 12 THE OREMA. 20 PROPOSITIO.

[146.] NOTATO

[147.] 13 THEOREMA. 21 PROPOSITIO.

[148.] DEMONSTRATIO.

[149.] 9 PROBLEMA. 22 PROPOSITIO.

[150.] PRAGMATIA.