Uitdrukking 5: polygon left parenthesis, left parenthesis, 0 , 0 , right parenthesis , "u" Subscript, "v" , Baseline , right parenthesispolygon0,0,uv
5
Uitdrukking 6: "d" Subscript, "o" "t" , Baseline left parenthesis, "a" , "b" , right parenthesis equals "a" . "x" "b" . "x" plus "a" . "y" "b" . "y"dota,b=a.xb.x+a.yb.y
6
Uitdrukking 7: "d" Subscript, "o" "t" , Baseline left parenthesis, "u" Subscript, "v" , Baseline , left parenthesis, "x" , "y" , right parenthesis , right parenthesis plus 1 equals 0dotuv,x,y+1=0