Grave ductum perpendiculariter per spatium
datum diuturnitate data, perseveret in
motu super plano inclinato; perquirere in
eo motum in data diuturnitate.
49[Figure 49]
datum diuturnitate data, perseveret in
motu super plano inclinato; perquirere in
eo motum in data diuturnitate.
![](https://digilib.mpiwg-berlin.mpg.de/digitallibrary/servlet/Scaler?fn=/permanent/archimedes/balia_demot_064_la_1646/064-01-figures/064.01.086.1.jpg&dw=200&dh=200)
Ducatur grave A perpendiculariter per AB
diuturnitate quae sit AB, & perseveret
in motu super BD plano inclinationis notae.
diuturnitate quae sit AB, & perseveret
in motu super BD plano inclinationis notae.
Producatur BD in C donec concurrat cum AC
orizontaliter ducta ab A ad C. Erit BC diu
turnitas ipsius BC.
orizontaliter ducta ab A ad C. Erit BC diu
turnitas ipsius BC.
Erit BE diuturnitas BD stante motu praecedenti
per BC.
per BC.