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b) A(3,0) ---> T(2,1) ---> A'(3+2,0+1) = A'(5,1)
A'(5,1) ---> sb.x ---> A"(x,-y) = A"(5,-1)
c) sudut Q = 180˚-(68+68)˚
= 180˚-136˚
= 44˚