How to use point values ​​to perform linkage settings on the geometric sketchpad

For example, to achieve this effect: drag point C to drive point H to move on arc FG. The specific operations are as follows:

1. Use the line segment tool to draw a line segment AB; use the point drawing tool to draw a point C on the line segment. Select point C, [Measurement] - [Point Value] to get the value of point C on line segment AB.

2. Use the circle drawing tool to draw a circle D. Use the point drawing tool to draw two points F and G on the circle, select circle D and points F and G, [Construction] - [Arc on Circle].

3. Select the point value of measured point C and arc FG, [Draw] - [Draw point on arc] to get point H.

4. Drag point C, and point H will follow the movement on the arc. You can select point H and arc FG, hold down the Shift key [Measurement] - [Point Value] to verify the point value of point H on arc FG.

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