How does word draw a curve with a double arrow?

Straight line with double arrows presumably everyone would draw, just select the double arrow connector in the word AutoShape! However, most people certainly do not know how to draw a curve with a double arrow in Word, the author gives a case description here!

First, as shown in the diagram, there is a coordinate system with a and b two points on the horizontal axis, and now you need to connect two points with a curved curve with a double arrow! If you insert a double arrow connector directly, the lines will overlap each other on the horizontal axis to achieve the goal!

Second, insert the curve. In the word AutoShape, select the curve, start with point A, click the left mouse button to determine the start position, and then drag the mouse to the right, to a certain position click the left mouse button again to determine the highest point of the curve, and then continue to drag the mouse to point B, and then double-click the mouse to

Third, set the AutoShape format. After you finish making the curve, select the curve graphic, right-click, and select the AutoShape in the Pop-up Drop-down dialog box, and the AutoShape Format dialog box pops up as shown in the picture!

Four, set the arrow format. In the dialog box at the bottom of the list of colors and lines, with the arrow settings, respectively, the beginning and end style set to the arrow, click OK!

V to determine the curve graph. At this point, with the two-arrow curve has been set up, select the graph, according to the middle of the curve to drag and drop points, you can freely adjust the shape of the curve and the coordinates of the quadrant!