Given a triangle ABC with three squares erected externally on the sides AB, AC, and BC with centers P, O, and Q, respectively. Then (1) the lines AQ, BO, and CP are concurrent at a point V, called the outer Vecten point of the triangle ABC. (2) AQ is equal and perpendicular to PO, BO is equal and perpendicular to PQ, CP is equal and perpendicular to OQ.
	  In 1817, 
	  M. Vecten, 
	  was a French Mathematician, who taught mathematics with Gergonne in Nımes,France.
	  The 
	  outer Vecten point is the point X(485) in 
	  Clark Kimberling's Encyclopedia of Triangle Centers.
	     
 

This step-by-step interactive illustration was created with GeoGebra.
GeoGebra is free and multi-platform dynamic mathematics software for all levels of education that joins geometry, algebra, tables, graphing, statistics and calculus application, intended for teachers and students. Many parts of GeoGebra have been ported to HTML5.
Geometry Problems
		
Open Problems
	  Visual Index
		
		Ten problems: 1411-1420
All Problems
              
		                
			Triangle
 
              
		                
				       		                
			
			Square
              
		                
			Triangle & 
			Squares
 
			Triangle Centers
 
               
				       		                
									
			Classical Theorems
 
               
		
			Dynamic Geometry
			
			Congruence
GeoGebra
			        
		HTML5 and Dynamic Geometry
	  iPad Apps
			View or Post a solution