Personally, I think it's better to use the geometric sketchpad, without any programming, just draw directly with tools. In addition, there is animation function, which can make graphics move and watch the transformation process, which is unique to it. For example, draw a 60 degree angle with it. The specific steps are as follows:

The first step is to construct rays. Select "Ray Tool" in the left toolbar, click the mouse anywhere on the drawing board to determine the endpoint A of the ray, then drag the mouse and the ray will come out. Here, hold down the "Shift" key, click the mouse at an appropriate position, and construct a horizontal ray AB.

Step 2: Construct an edge AC with a 60-degree angle. Double-click point A to mark it as the center of rotation, select point B and ray AB, select Transform-Rotation, enter an angle of 60 in the dialog box, as shown below, and then click OK to get the other side of the angle.

Mark the angle. Using the Geometer's Sketchpad Marking Tool, place the cursor at point A, press the mouse and drag the corner inward to mark the corner. ∠ BAC = 60 after measurement, which is the required angle. For more drawing skills, you can go to the Geometer's Sketchpad Chinese official website to learn.