Operation content of using the geometric sketchpad to construct the intersection point of a straight line and a circle

1. Open the geometric sketchpad, execute the [Draw]-[Draw New Function] command, click [2], [x] in the pop-up dialog box, and make the function analytical formula f(x)=2x, As shown in the figure, click [OK] to draw the function image.

2. Use the [Circle Tool] to draw a circle, select the circle and the straight line at the same time, and execute the [Construction]-[Intersection] command to construct the intersection of the straight line and the circle.

3. Click [Text Tool] and set the labels of the intersection points to A and B, as shown in the figure. Drag the circle to change its position. Point A and point B are both their intersection points. When the straight line has no intersection with the circle, the intersection points A and B disappear automatically.

4. Execute the [File]-[Save] command.

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