1) Consider point A. Describe the shape the point traces as the door panel rotates around the center pole.

2) Consider side AB. Describe the shape formed as the set of points included in the segment
rotate around the center pole.

While a circle is the set of all points that are equal distance from the center, a disc is the set of all points on the circle and in the interior of the circle.

3) Consider all the points that make up Rectangle ABCD and its area. What solid does the door panel form as it rotates around the center pole? Explain your reasoning.