Expression 19: polygon left parenthesis, "C" , "D" , "M" , right parenthesispolygonC,D,M
19
Expression 20: left parenthesis, "C" Subscript, 1 , Baseline plus "s" cos "t" , "C" Subscript, 2 , Baseline plus "s" sin "t" , right parenthesisC1+scost,C2+ssint
domain t Minimum: 180180
less than or equal to "t" less than or equal to≤t≤
domain t Maximum: 270270
20
Expression 21: polygon left parenthesis, "A" , "C" , "A" , "B" , "C" , "D" , "M" , "D" , right parenthesispolygonA,C,A,B,C,D,M,D