ring = [[0,0],[10,0],[10,10],[0,10],[0,0]]area = 12.53598845768457ring = [[0,0],[0,10],[10,10],[10,0],[0,0]]area = 0.03038215667460248 ring = [[0,0],[10,0],[10,10],[0,10],[0,0]]area = 10000ring = [[0,0],[0,10],[10,10],[10,0],[0,0]]area = 10000