HOW TO USE THIS APPLET

The graph area

• Drag any highlighted location on the circle to move that location along the circle.
• Drag any non-highlighted location on the circle to change the radius of the circle.
• Drag the center of the circle to re-position the circle.
• Shift-drag the center of the circle to re-position the circle horizontally or vertically.

Other

• Use the "RESET" button to restore the applet to the initial state.

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