Answer:
rotation
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
Please have a look at the attached photo.
My answer:
As can be seen in the photo, a reflection across the y-axis could transform trapezold 1 to trapezoid 8
As can be seen in the photo, a horizontal translation across the x-axis could transform trapezold 1 to trapezoid 8
As can be seen in the photo, a rotation across the x-axis could transform trapezold 1 to trapezoid 7
Hence, rotation could not map trapezold 1 to trapezoid 8
Hope it will find you well.
