Image source: http://www.actionfarmtoys.com/pictures/96700-5.jpg
Models are a dilation of a real object. For example, a toy car is a dilation
of an actual car because the proportional dimensions on the model are equivalent
to the proportions on the car. In other words, if the length of the car is 4
times longer than its width on the model, then the length of the car will also be 4 times longer than its width on the actual car.