Mystery Motion

A small yellow box follows a mystery path across a tabletop. By observing the box's motion in only one dimension, from either the front or the side, try to determine the actual two-dimensional shape of the box's path. In other words, what would the box's motion look like if observed from above? The box always returns to its starting point, and although it may not look like it, the box always moves at the same speed. The paths are all geometric shapes consisting of line segments and, in a few cases, semi-circles. Color changes and a timer provide additional clues. Simply explore, or play for points.