4<^i 



GEOMLT!^ 



PROBLEM XXV* 



To viahe a Hexazofi en a f^lven Line 



With the radius A B, and 

 the centres A and B, de- 

 scribe arcs intersecthig in o. 

 With the same radius, and 

 centre o, describe a circle, 

 which will circumscribe the 

 hexagon. Then apply the 

 line A B six times round the 

 circumference, marking out 

 the angular points, which 

 connect with right lines. 



AB. 



PROBLEM XXVI. 

 fTo mah an Octagon on a ^'^iven Line A B. 



Erect A F and B E per- 

 pendicular to A B. Pro- 

 duce A B both ways, and 

 bisect the angles in A F 

 and /2 B E with the lines 

 A H and B C, each equal 

 to AB. Draw CD and 

 H G parallel to A F or 

 BE, and each equal to 

 A B. With radius A B, 

 and centres G and D, 

 cross AF and BE, in F 

 and E. Then join G F, F E, ED, and it is done 



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PROBLEM 



