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How to animate a circle folding along its diameter through Geometry Sketchpad? PHP editor Xinyi brings you a detailed tutorial to explain the specific steps of creating an animation that folds a circle along its diameter in the geometric sketchpad. This tutorial will walk you through the step-by-step process of creating this vivid animation, allowing you to easily demonstrate the geometric properties of a circle.
1. Draw circle O. Use the [Circle Tool] to draw a circle in the blank area of the artboard, with the center of the circle being O.
2. Make the diameters AB and CD that are perpendicular to each other in the circle O. Pick a point A on circle O, select points O and A, execute [Construction] - [Straight Line], and the intersection point of the straight lines is B. Construct line segment AB and hide the straight line. Select point O and line segment AB, execute [Construction] - [Perpendicular Line], and the intersection points with circle O are C and D. Construct line segment CD and hide the vertical line.
3. Construct arc. Pick any point P on AB, select points C, P, and D in sequence, and execute [Construction]-[Arc passing through three points] to create an arc.
4. Make operation buttons. Select points P and A in sequence, execute the [Edit]-[Operation Button]-[Move] command, and change the label to [Collapse]; similarly select points P and B in sequence, execute [Edit]-[Operation Button]- [Move] command, modify the label to [Restore]; select two operation buttons, execute the [Edit]-[Operation Button]-[Series] command, modify the label to [Collapse Circle], and execute them in sequence.
5. Hide redundant objects and complete the graphics production.
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