| 
              The figure below shows a 
				
				quadrilateral ABCD with E 
				
				midpoint of AC and BE 
				
				parallel to AD. If 
				
				area of 
				triangle
				ABC = 1 and area of triangle BCD = 4, find the area 
				of quadrilateral ABCD.
 
				 
 
 
  
						Mind Map:  George P�lya's 1945 book, 
						"How to Solve It"
				
								George P�lya's 1945 book "How to Solve It, A new aspect of 
				Mathematical Method", is a book describing methods of problem 
				solving. It suggests the following steps when solving a 
				mathematical problem: (1) First, you have to understand the 
				problem. (2) After understanding, then make a plan. (3) Carry 
				out the plan. (4) Look back on your work. How could it be 
				better?A mind map is a diagram used to visually organize information, knowledge, concepts or ideas.
 
   												
		 
		  
 
  |