OEF vectors 2D
    
      --- Introduction ---
    
  
 
This module contains actually 11 exercises on vectors in 2D
(linear combinations, angle, length, scalar product, vector product, etc.).
Area of parallelogram
		 (,) , (,) , (,) , (,).	
	
Area of pentagon
		 
 = (,), 
 = (),	 
 = (), 
 = (), 
 = ().	
	
Area of quadrilateral
		 	 
	 xrange -15,15	 yrange -15,15	 arrow -15,0,15,0,10,grey	 arrow 0,-15,0,15,10,grey	 linewidth 2	 polygon red,,,,,,,,	 linewidth 4	 points blue,,,,,,,,	 
	
	 			 
 = (,), 
 = (), 
 = (,), 
 = ().	
	 	 	
Area of triangle
	  (,), (,), (,).
	
Angle
	  	  
, 
, 
.
	  	
Combination
	  	  
, 
.
	  	  
.
	
Combination 3 vectors
	  	  
, 
, 
.	  
	  	  	   
.	  
	
Find combination
	  
, 
.
	   
 :	  
.
	
Given scalar products
	  	  
, 
.
	  :	  	   
, 
 .	  
	  	
Vertex of parallelogram
	
, 
, 
.
	 
.	
Linear relation
:	  	   
.	  
	  	  
,
	  	
  
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    - Description: collection of exercises on 2D vectors. exercises interactifs, calcul et tracé de graphes en ligne
 
    - Keywords: interactive mathematics, interactive math, server side interactivity, algebra, linear_algebra, geometry, vectors, cross_product, polygons,euclidean_geometry