The geometric sketchpad draws the operation instructions of love.
1. Open the geometry drawing software of the Geometry Sketchpad and click "Draw"-"Define Coordinate System" on the menu bar above, and the coordinate system will be displayed. Then click Draw again to change the grid style to a polar grid.
Figure 1: Establishing a grid coordinate system on the geometric sketchpad.
2. Enter the heart-shaped function. Press the shortcut key Ctrl+G to open the new function window and enter the function as shown in the figure below. Other heart-shaped image functions can also be entered here.
Figure 2: Input Heart-shaped Function
3. After the input is completed, click OK to open the following trigonometric function window. Click Yes.
Figure 3: trigonometric function window
4. This can automatically draw the function image, as shown in the figure below.
Figure 4: Draw a function image
5. Select the right mouse button of the function diagram, click "Properties", open the drawing option in the pop-up window, and uncheck "Show Arrows and Endpoints".
Figure 5: Attribute Settings
6. Then hide what you don't need. Press Ctrl+A to select all objects, then press Ctrl to click the image to deselect, and then press Ctrl+H to hide other objects. If you don't need to draw, you can stop here.
Figure 6: Hidden objects
7. Build a line segment. Select the line segment tool and hold down Shift to draw a horizontal line segment (the left end point is to the left of the left end point of love and the right end point is to the right of the right end point of love). Use the point tool to build a point o on the line segment. Then cross the point to make the vertical line, construct two intersection points A/B with love, and construct line segment AB.
Fig. 7: Construction of line segment AB
8. Click point O and line AB in turn. Click the command "Structure"-"Track" and you can color your love.
Figure 8: Building Trajectory
9. If it is not clear enough, select the function diagram, right-click and click "Improve Resolution" several times. Hide what you don't need.
Geometric sketchpad |