1tactus f lineæ fg. fe motui centri parallelæ, lineæ nimi
rum hypomochlij, extra quas cadunt centra a & b: quia
ergo plaga non niſi per centrum fit grauitatis, erunt li
neæ fab. fbb lineæ motus à percuſsione: ſunt autem li
neæ ai.bk lineæ motus centri extra hypomochlium:
5[Figure 5]
quia ergo lineæ motus ab. ai, & bl.bk angulos ducunt
iah.lbk minores duobus rectis, erunt per defini: 5 motus
ſecundùm quid contrarij, ac proinde inter ſemiſcentur
per prop: 31. Verùm de motu reflexo accuratiùs dice
mus à prop: 36. uſque; ad 40.
rum hypomochlij, extra quas cadunt centra a & b: quia
ergo plaga non niſi per centrum fit grauitatis, erunt li
neæ fab. fbb lineæ motus à percuſsione: ſunt autem li
neæ ai.bk lineæ motus centri extra hypomochlium:
![](https://digilib.mpiwg-berlin.mpg.de/digitallibrary/servlet/Scaler?fn=/permanent/archimedes/marci_regul_062_la_1639/062-01-figures/062.01.013.1.jpg&dw=200&dh=200)
quia ergo lineæ motus ab. ai, & bl.bk angulos ducunt
iah.lbk minores duobus rectis, erunt per defini: 5 motus
ſecundùm quid contrarij, ac proinde inter ſemiſcentur
per prop: 31. Verùm de motu reflexo accuratiùs dice
mus à prop: 36. uſque; ad 40.
III.