Expression 12: polygon left parenthesis, left parenthesis, 2 , 5 , right parenthesis , left parenthesis, 2 , 4 , right parenthesis , left parenthesis, 3 , 6 , right parenthesis , left parenthesis, 3 , 7.5 , right parenthesis , right parenthesispolygon2,5,2,4,3,6,3,7.5