Polygon

For polygons, you can drag the following control points and handles:

Original Polygon

Polygon after dragging the Bend control point

1. Bend

2. Size

3. Bend Handle

Hold Ctrl (command in Macintosh) and drag the Size control point to maintain the polygon's orientation.
Hold Ctrl (command in Macintosh) and drag the Bend control point to restore the polygon to its original shape.
Hold Shift and drag the Bend Handle to move the opposite handle in the same direction.
Hold Ctrl (command in Macintosh) and drag the Bend Handle to keep the opposite handle stationary.