example	shape	a	b	h	r
1	square	1	1		
2	square	2	2		
3	square	3	3		
4	rectangle		1	2	
5	rectangle		2	3	
6	rectangle		3	4	
7	parallelogram		2	3	
8	parallelogram		3	4	
9	parallelogram		4	5	
10	trapezoid	2	3	1	
11	trapezoid	3	5	2	
12	trapezoid	5	7	3	
13	triangle		3	2	
14	triangle		5	3	
15	triangle		6	4	
16	ellipse	2	3		
17	ellipse	3	4		
18	ellipse	5	6		
19	circle				2
20	circle				3
21	circle				4