Expression 7: polygon left parenthesis, 1 minus "t" Subscript, 1 , Baseline minus "x" Subscript, 1 , Baseline , 1 minus "t" Subscript, 1 , Baseline plus "y" Subscript, 1 , Baseline , right parenthesispolygon1−t1−x1,1−t1+y1
7
Expression 8: polygon left parenthesis, negative 1 plus "t" Subscript, 1 , Baseline plus "x" Subscript, 1 , Baseline , 1 minus "t" Subscript, 1 , Baseline plus "y" Subscript, 1 , Baseline , right parenthesispolygon−1+t1+x1,1−t1+y1
8
Expression 9: polygon left parenthesis, negative 1 plus "t" Subscript, 1 , Baseline "x" Subscript, 1 , Baseline , 1 minus "t" Subscript, 1 , Baseline "y" Subscript, 1 , Baseline , right parenthesispolygon−1+t1x1,1−t1y1
9
Expression 10: polygon left parenthesis, "t" Subscript, 1 , Baseline "x" Subscript, 1 , Baseline , "t" Subscript, 1 , Baseline "y" Subscript, 1 , Baseline , right parenthesispolygont1x1,t1y1