What is true about the dilation? A large parallelogram is the pre-image and a smaller parallelogram is the image. It has a scale
factor between zero and one and is a reduction. It has a scale factor greater than one and is a reduction. It has a scale factor between zero and one and is an enlargement. It has a scale factor greater than one and is an enlargement.
it would be the Adjacent side (8) over the Hypotenuse, or the longest side which is 10. an easy way to remember this is CAH or Cosine=Adjacent/Hypotenuse