Avaldis 14: polygon left parenthesis, "A" , "B" , left parenthesis, "D" . "x" plus "B" . "x" , "D" . "y" , right parenthesis , "D" , right parenthesispolygonA,B,D.x+B.x,D.y,D
14
Avaldis 15: "M" Subscript, "b" , Baseline equals 1 half left parenthesis, "A" plus "C" , right parenthesisMb=12A+C
15
Avaldis 16: "M" Subscript, "a" , Baseline equals 1 half left parenthesis, "B" plus "C" , right parenthesisMa=12B+C
