SPACE AND GEOMETRY 



35 



their children were taught the same kind of 

 theorems and corollaries as our children are 

 now taught. The}^ ventured out but short dis- 

 tances in their canoes until they discovered the 



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'Ik 



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MOA 



Figure 1 



lodestone and the compass. Then their naviga- 

 tors became bolder and finally they had mapped 

 out a great part of the Southern Pacific. One 

 of their maps is shown in Figure 1. A vertical 

 line represents the path of a canoe going di- 



