In order to keep the cut-out centered about the origin, regardless of how you update the overall width of the part, what should the sketch of the cut-out look like?

What type of view was used to create the drawing view shown in the image?

What feature should you use if you want to create the image on the left using the dimensions provided in the image to the right?

To build the part shown in the image, what feature should you create first?

What mates should you add between the components in the assembly to make sure the two red faces are always 20 mm apart?