^z Geometrical InflruSlions 



The Befmition of a Line, 



§ 2. The Line is a Length without Breadth, 

 made by the Motion of a Point, and is of feveral 

 'fends, as it receives Difference of Motion. 



The right or ftrait Line, is that which is equal- 

 Jy compriz'd within its Extremities, as A B, Def. 



The circular Line, is as plainly made from the 

 .rouhd Motion of a, Pair of CompafTes, as C D, 

 :Def. 2. :Ci''iG:i ^r' 



, The crooked Line, is that which turneth or wan- 

 dereth from its Extremities by one or more Turn- 

 ings afide, as E F, Def. 5; . , 



The compofite or mix'd Line, is that Part of 

 it which is crooked, and Part ftrait, as is the Line 

 GH, Def4. 



The Line is alfo diJling'uiJI)cL into finite and infinite , in- 

 to apparent^ and occult or hidden. 



The Line finite, is a Line bounded at each End 

 of a certain Length ^ fuppofe loo Yards certain, 

 or any other certain Dimenfion, whether ftrait or 

 circular, as are the Lines pointed at both Ends, 

 and mark'd 1 1 1 1, Def. ^ 



The infinite, is a Line of an undetermin'd 

 Length, asKK, Def:6. v 



The apparent, or Tra£t, is drawn veryftrong, 

 as either K — K, Def. 5 or 6. 



The occult are only mark'd with the Point of 

 the Compafs or Pencil, as we commonly do our 

 Hedge-Lii^ as L L, Def 7. 



The fpiml Line, call'd otherwife the Vbhtay 

 from volvo) is defcrib'd L, Def 8. 



