Enter first point
1,1
2,2
Enter second point
3,3
4,4
Enter third point
5,5
6,6
Circumference:
 (-1,1, -2,2) [r:2,45967477524977, a:4,24874137138388]  
 (4,3, 6,4) [r:7,71038261048049, a:0,979196616459785]  
 (5,5, 6,6) [r:8,59127464349732, a:0,876058050598193]  
 22,3713543258885