CORRESPONDANCE. 1687. 
ftmajor quam BM. us ë, + Lib 3) longitudine filorum, punétum 
Xtra CUrVam, quam idcirco reéta NM tangit in punéto M. 
| angulorum cum non fint angulis proportionales, facile liquebit 
mm non exhibituram rectam LM quod vel exemplo pate- 
. Sumamus angulum BMC 30 gr. DMC gr. 75. erit arcus FG gr. 
52x ut et IH gr. 224. IK vero eft gr. 374 ideoque HK gr. 15 et 
Hinc erit arcus IL 30 gr. FL gr. 60, et GL gr. 45. Adeoque 
‘erunt dimidium laterum trianguli, hexagon, quadrati En ag 
pt. adeoque fi radius fit 1 erit FR 2 11/3, IV 4 
nde fequitur, fi reûla ML D. Tfchirnh, eadem foret cum is 
ent fore 4217 3.+ £ % 2. Quod eft abfurdum.” 
5 Volder, cujus sen ipfe me melius nofti. sa in his 
N De certe oo on trouve dans le livre F des Adversaria la note suivante 
kr. Huygens: 
Ad demonstrationem Volderi in Âitbets ad Gentium. 
À ns 4 ... MP+MQ%2MS 
4 EttBMLMP I CM4+MQ+ 2DS 50 BM+CM+2DM 
__ SiveBP+CQ-<+2DS © BM+-CM+2DM 
_SedBN>BP.EtCN>CQ. Et2DN >> 2DS 
_ Ergo BN+CN + 2DN major quam BM + CM + 2DM. 
