นิพจน์ 26: left parenthesis, "M" Subscript, 1 , Baseline , "M" Subscript, 2 , Baseline , right parenthesis , left parenthesis, "D" Subscript, 1 , Baseline , "D" Subscript, 2 , Baseline , right parenthesisM1,M2,D1,D2
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นิพจน์ 27: polygon left parenthesis, "B" , "D" , right parenthesispolygonB,D
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นิพจน์ 28: polygon left parenthesis, "A" , "B" , "C" , "D" , right parenthesispolygonA,B,C,D
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นิพจน์ 29: left parenthesis, "M" Subscript, 1 , Baseline plus "R" cos "t" , "M" Subscript, 2 , Baseline plus "R" sin "t" , right parenthesisM1+Rcost,M2+Rsint