Draws a closed shape consisting of straight line segments. Click where you want to start the polygon, and drag to draw a line segment. Click again to define the end of the line segment, and continue clicking to define the remaining line segments of the polygon. Double-click to finish drawing the polygon. To constrain the polygon to angles of 45 degree, hold down Shift when you click.
绘制由直线段组成的封闭形状。在多边形开始的位置单击，然后拖动以绘制直线段，再次单击以定义线段的结尾。继续单击从而定义出多边形其余的线段。双击以完成多边形的绘制。要将多边形限制为 45 度角，请在单击时按住 Shift 键。