a. What is the sum of the angles in the original quadrilateral?
360° (a quadrilateral's angles are always equal to 360°)
b. What is the sum of the angles of the image after the dilation?
360° (a quadrilateral's angles are always equal to 360°)
c. What is the difference between the perimeter of the original figure and the perimeter of the image?
The perimeter of the image will be 2 times the perimeter of the original figure. (it is being increased by a scale factor of 2, so it'll be two times larger)
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather