Question

Does a dialation preserve an objects size

Answer 1

No, it does not. A dilation is used to change the figures size. It can make an object bigger or smaller. However, dilations make the figure stay the same shape.

If you wanted to preserve an objects size you would mostly use one of the three rigid motions.

They are as follows: Translation, reflection and rotation.

To be a rigid, the transformation MUST leave the size and shape of an object the same.

As an extra fact, a dilation is not a rigid motion.

Hope this helps!!

Answer 2

No.
When you dilate an object, you multiply the values of the points of the figure by a set value. This results in an increase or decrease in size.