Pre image = Polygon ABCD
Image = Polygon A'B'C'D'
If the dilation factor ,
1. 0 < Dilation factor < 1
Pre image > Image
2. Dilation factor > 1
Image > Pre image
When a figure is dilated , the two pre image and image are similar to each other , means
1. The sides of two polygons are proportional.That is

2. Interior angles are congruent:
1.∠A=∠A', 2. ∠B=∠B', 3. ∠C= ∠C', 4.∠D= ∠D'