Graphical and textual operation methods for realizing rotating parabola using geometric sketchpad

The guide to unlocking all the skills of Winter Rhapsody has been released under the guidance of php editor Xigua! This character plot simulation game is based on a small town story and incorporates characteristic elements of Japanese themes. Players will face various in-depth puzzle-solving challenges, and skill operation becomes the key. The game not only has interesting content waiting to be explored, but also provides a wealth of skill-based gameplay. Follow the editor to reveal the secrets, unlock all skills, and enjoy a more comprehensive gaming experience!

1. Use [Point Tool] to draw point A and point B, select points A and B in turn, select [Construction] - [Draw a circle with center and circumference] command to draw a circle. Select point A and point B, click [Construction] - [Straight Line], and the straight line and circle intersect at point C. Hide the straight line and draw line segments BC and AB.

2. Take points D and E on line segment CB so that point D is to the left of point A. Select points A and D in turn, and select the [Construction]-[Draw a circle with center and circumference] command. Draw a small circle.

3. Use the [Point Tool] to pick a point F on the small circle, and draw a perpendicular line through F to the line segment BC, with the vertical foot being G. Hide the straight line and draw the line segment FG.

4. Take any point H on the line segment FG, select point F and point H, select [Construction] - [Trajectory], and draw the trajectory of point H when point F moves. .

5. Select point A and point D respectively, click [Measure] - [Distance], also measure the distance between point A and point E, select [Data] - [ Calculate], click the measurement value in turn to calculate the ratio of the two. Using the same method, go to [Data] - [Calculation], click Ratio, [^], [2], [*] [1], select [cm] in the unit button, and confirm.

6. Select the calculation result of the last step, click [Transform] - [Mark Distance], select point H, click [Transform] - [Translation], and move point H According to the marked distance, point H' is obtained by moving in the direction of 90 degrees.

7. Select point D and point H’, click [Construct]-[Trajectory], and draw the movement trajectory of H’ when point D moves.

8. Double-click point A to mark the center of rotation, select point H, click [Transform] - [Rotate], rotate point H 180 degrees around point A to obtain point H ], select point H], select [Transform] - [Translation], [Mark Distance], [Fixed angle 90 degrees] to translate, get point H'''Select point H]' and point D, click [Construct] ——[Trajectory],

9. Select point F, select [Edit]-[Operation Button]-[Animation] command, draw the button for the movement of point F, and press Press the button and the parabola will rotate.

Dear friends, I have just come into contact with the Geometric Sketchpad software. Come and learn the graphic and text operations of the geometric Sketchpad to realize the rotation of a parabola in this article today. I believe you will be comfortable in future use. .

The above is the detailed content of Graphical and textual operation methods for realizing rotating parabola using geometric sketchpad. For more information, please follow other related articles on the PHP Chinese website!