Divtjion of Right Lines, Surfaces, and Solids. 8 3 
Thus, if the fquare on bc be fuppofed fucceffively 
equal to the fquare on ab multiplied by the terms of the 
feries. 5, 6, 7, 8, 9, 10, 11,12, 13, 14, 15, 16, 17, 18, 
Sec. the numbers of the feveral parts denoted by as, will 
be 11,13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 
37, 39, 41, See. which feries comprehends all odd num- 
bers after 9, and might have begun from 3 had the other 
feries begun from 1 . 
