Draws an arc that is based on a circle in the current document. To draw an arc, drag a circle to the size you want, and then click to define the starting point of the arc. Move your pointer to where you want to place the endpoint and click. You do not need to click on the circle. To draw an arc that is based on an ellipse, hold down Shift while you drag.
在当前文档中绘制圆弧。要绘制圆弧，请先将圆拖动到所需大小，然后单击以定义圆弧的起点。将鼠标指针移到要设置为终点的位置，然后单击。不需要在圆上单击。要绘制椭圆弧，请在拖动时按住 Shift 键。