The transformations needed to show that a square CD case is similar to a baseball diamond are a dilation and a rotation.
A dilation is a transformation that enlarges or shrinks an object by a certain factor. In this case, the CD case would need to be enlarged by a factor of 4 to match the size of the baseball diamond.
A rotation is a transformation that turns an object about a certain point. In this case, the CD case would need to be rotated 90 degrees about its center to match the orientation of the baseball diamond.
Once the CD case has been dilated and rotated, it will be similar to the baseball diamond. This means that the two figures will have the same shape, but they will not be the same size.