(3x ^3 + 4x^2)+(3x3-4x^2-9x)=

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Which of the following is the shape of a cross section of the figure shown below

Opposite angles in a parrellelogram are