SYSTEM OF ELEMENTARY GEOMETRY. 



Chapter I. 



Citcnsion in tin 



Book I. Angles. 

 Itof.U II. Slrniglit lines. 



nook III. Arcs or Circumferences. 



Term of lliis Cli.ipte 



1 Angles at one (joinl, 



2 Angles lit two pniutF, viz. parallel lines, 



3 Angles at mote than tno poitils, viz. aoglci of fisnrea. 



1 SiJcs or triangles, C&) excess and equality as to gcnCTal forms, 

 (bj parliculatilo. as Isosceles, ic. plane 



(c) other relations (i.e.) proportions [Scholium Trigonomelrj 



2 .Sides of rjuacltilulcruls, ° ' 



3 SiJes of polygoiiii, 



1 Angles in relation to arcs. 



2 Struiglit lilies, inleisucling or forming figures, (a.) Cliords, langls. 



(b) Figures formed of siirh, 



3 Arcs compared with straiglil lines as In len;^llL and rroportion. 



D llie ratio compounded of thrise of tbeir radii and anglea. 



ClIAPTEFi II. 



Est«nsioD in snrfacc, 



IJook I\'. 

 Book V. 



rtt'Ct)ini;uliir surfaces or arci 

 Nim-ri'iiangulav sorfaces o 



, (u)E(|ualit7 (b) other proportions- 

 ireoa, (a) Equality, (b) othir ditto. 



Circular surfaces or areas compared with Ihclike. 

 Circular surfaces or areas compared with rectilineal. 



gcamotr 



