[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.