The figure below shows 
	  two triangles ABC and DEF with areas S1 and S2 
	  inscribed in a circle O. Prove that S1/S2 
	  = (a.b.c)/(d.e.f)
 

 
Geometry Problems
		
		Ten problems: 1391-1400
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						Triangle
 
			        
			
			Triangle 
	  Area
                
		                
      
			
			Circumcircle
              
		                
			Circle
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