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      Plane Geometry: Open Problems, 
		High School, College
				
         
  
  
                		  
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							Open Geometry Problems - Index 7
  
  
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		College Geometry Online 
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					Geometry Problem 
					715. 
					Post 
				a solution 
					Triangle, Altitudes, Parallel, Circumcircle, Angle, Measurement.  | 
    	 
	
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						Problem 690: Distance between the Incenter and the Centroid of a 
						Triangle. 
					Post 
				a solution 
						Formula in terms of the sides a,b,c.  | 
     
	
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					Geometry Problem 689. 
					Post 
				a solution 
					Triangle, Three Excircles, Tangency points, Tangent lines, Concurrent Lines, Mind Map.  | 
    	 
	
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					Geometry Problem 675. 
					Post 
				a solution 
					Intersecting Circles, Secant, 45 and 90 Degrees, Collinear Points.  | 
     
	
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					Geometry Problem 674. 
					Post 
				a solution 
					Triangle, Altitude, Angles.  | 
     
	
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						By Antonio Gutierrez 
						
				
		 
 
 
  
 
  
  
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