How to make simple geometric sketchpad animation

I don't know what kind of animation I want to achieve. Let me give you an example to make an animation that rotates around a point to explain it to you:

Take making "animation of triangle rotating around any point on the plane" as an example, the specific operation steps are as follows:

Step 1: Open the Geometry Sketchpad, draw any triangle ABC with the "Line Tool" on the left, then draw any point O outside the triangle with the "Point Tool", and double-click the point O to mark it as the center of rotation; ;

Step 2: Click the data menu above, select the new parameter command from the drop-down menu, and in the new parameter dialog box that pops up, change the unit to angle, and then click OK;

Step 3: Select the newly created angle parameter in the previous step, then click the "Transform" menu above and select the "Mark Angle" command from the drop-down menu, as shown in the following figure;

Step 4: Select the triangle ABC to be rotated, click the "Transform" menu above, select the "Rotate" command in the drop-down menu, the marked angle will be taken as the angle, and then click "OK";

Step 5: Select the angle parameter, click the edit menu above, select the operation button-Animation in the drop-down menu, and click OK in the pop-up animation button dialog box. Click the parameter animation button with the mouse to open the animation of the triangle rotating around the point. Of course, animation can also appear by manually changing the angle of parameters.

According to the above steps, you can make a triangle rotation animation. In fact, the geometric sketchpad can also do a lot of animation. If you don't understand, I recommend you to study at/support.html Many animation tutorials will definitely help you.