Question

answers are : • center D and scale factor ½• center D and scale factor 1 • center E and scale factor 3• center E and scale factor ½

Answer 1

The center of the dilation is a fixed point in the plane about which all the points are expanded or contracted, the center of the dilation is the only point that does not change. Hence in this case the center of the dilation is the point D.

Now, we notice that the dilation contracted in half the original figure.

Therefore, the dilation is: center D and scale factor 1/2