Question

i will give a medal.



What set of rotations would carry trapezoid ABCD onto itself?



rotate 180�, reflect over the x-axis, reflect over the line y=x

reflect over the y-axis, reflect over the x-axis, rotate 180�

rotate 180�, reflect over the y-axis, reflect over the line y=x




rotate 180�, reflect over the x-axis, reflect over the line y=x

reflect over the y-axis, reflect over the x-axis, rotate 180�

rotate 180�, reflect over the y-axis, reflect over the line y=x

reflect over the x-axis, rotate 180�, reflect over the x-axis