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The operation process of making ellipse with geometric sketchpad
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- 2024-04-16 18:30:31946browse
php Editor Strawberry When making an ellipse on the geometric sketchpad, you need to first determine the long and short axes of the ellipse and select the appropriate tool to draw it. Then, by setting the center point and angle of the ellipse, and then making detailed adjustments, you can complete the drawing of the ellipse. This process requires patience and precision to ensure the final result is as expected.
1. Construct line segments and midpoints. Select [Straight Line Tool], draw line segment AB, select [Construction]-[Midpoint] command, and draw the midpoint C of line segment AB.
2. Construct a circle. Select point C and point A in turn, select [Construction]-[Draw a circle with the center and points on the circumference] command, and draw a circle C with point C as the center and passing through point A.
3. Construct the vertical line and intersection point. Select [Point Tool], make any point D on the circle, select point D and line segment AB, select [Construction]-[Perpendicular Line] command, draw the perpendicular line of line segment AB, and the intersection point with line segment AB is E.
4. Hide circles and straight lines. Select the circle C and the straight line DE, select the [Display]-[Hide Path Object] command to hide the circle C and the straight line DE.
5. Construct line segments and midpoints. Select the [Line Segment Tool] and draw the line segment DE. Select the [Construction]-[Midpoint] command to draw the midpoint F of the line segment DE.
6. Draw an ellipse. Select point D and point F in turn, select the [Construction]-[Trajectory] command to draw an ellipse. As shown below.
7. Hidden points and line segments. Select point D, point E, point F, and line segment DE, select the [Show]-[Hide Object] command, and the ellipse drawing is completed.
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