Expression 7: polygon left parenthesis, negative 2 plus "y" Subscript, 1 , Baseline , 2 plus "x" Subscript, 1 , Baseline , right parenthesispolygon−2+y1,2+x1
7
Expression 8: polygon left parenthesis, negative 2 "t" Subscript, 1 , Baseline plus "y" Subscript, 1 , Baseline , 2 "t" Subscript, 1 , Baseline plus "x" Subscript, 1 , Baseline , right parenthesispolygon−2t1+y1,2t1+x1
8
Expression 9: polygon left parenthesis, negative 2 plus "y" Subscript, 1 , Baseline , negative 2 plus "x" Subscript, 1 , Baseline , right parenthesispolygon−2+y1,−2+x1
9
Expression 10: polygon left parenthesis, negative 2 "t" Subscript, 1 , Baseline plus "y" Subscript, 1 , Baseline , negative 2 "t" Subscript, 1 , Baseline plus "x" Subscript, 1 , Baseline , right parenthesispolygon−2t1+y1,−2t1+x1