Look at the figure below.
An irregular shape is made of 2 rectangles. The lower rectangle is 8 feet long and 1 foot wide. Centered on top of it is another rectangle that is 2 feet wide and an unknown length. The top rectangle is 1 foot shorter in length than the lower rectangle on both sides. The 2 rectangles form 1 shape.
I cannot display images, but I can help you understand the figure based on your description.
The irregular shape is like this:
1. The lower rectangle is 8 feet long and 1 foot wide.
2. The top rectangle is centered on top of the lower rectangle, with a width of 2 feet and an unknown length. However, we know it is 1 foot shorter on both sides than the lower rectangle.
Since the top rectangle is 1 foot shorter on both sides, its length would be 8 - 1 - 1 = 6 feet (subtracting 1 foot from each side). So the top rectangle is 6 feet long and 2 feet wide.
Together, they form one irregular shape.