Expression 18: left parenthesis, "D" Subscript, 1 , Baseline plus 1.3cos "t" , "D" Subscript, 2 , Baseline plus 1.3sin "t" , right parenthesisD1+1.3cost,D2+1.3sint
18
Expression 19: left parenthesis, "B" Subscript, 1 , Baseline plus 1.3cos "t" , "B" Subscript, 2 , Baseline plus 1.3sin "t" , right parenthesisB1+1.3cost,B2+1.3sint
19
Expression 20: polygon left parenthesis, "A" , "C" , "A" , "B" , "D" , "B" , "C" , "D" , right parenthesispolygonA,C,A,B,D,B,C,D
20
Expression 21: left parenthesis, "D" Subscript, 1 , Baseline plus cos "t" , "D" Subscript, 2 , Baseline plus sin "t" , right parenthesisD1+cost,D2+sint
21
Expression 22: left parenthesis, "B" Subscript, 1 , Baseline plus cos "t" , "B" Subscript, 2 , Baseline plus sin "t" , right parenthesisB1+cost,B2+sint