How to draw parametric circle images using geometric sketchpad

How to draw an accurate parametric circle with geometric sketchpad? PHP editor Xinyi introduces two methods to help you solve this problem. Please continue reading below for detailed steps.

1. Select [Drawing] - [Define Coordinate System] to establish a rectangular coordinate system. Click [Drawing] - [Hide Grid] to hide the grid. Change the origin label to [O]. Use the [Point] tool to draw three points on the x-axis, labeled D, E, and F respectively.

2. Select point D, point E, point F and the x-axis, click [Construction] - [Vertical Line] to draw three vertical lines perpendicular to the x-axis. . Use the [Point] tool to draw one point on three vertical lines, labeled A, B, and C respectively.

3. Select 3 vertical lines and press the shortcut key [Ctrl H] to hide the 3 vertical lines. Select point A and point D and press the shortcut key [Ctrl L] to draw line segment AD. In the same way, draw line segments BE and CF.

4. Select point A, point B and point C, click [Measurement] - [Vertical Coordinate] menu command in sequence, drag the measurement value to the appropriate position, right-click Measurement value, change the labels in the attributes to a, b, c respectively.

5. Select [Draw] - [Draw New Function] menu command, and in the dialog box, select [sqrt], [c], [ ^], [2], [-], [(], [x], [-], [a], place the cursor between the two brackets, continue to enter [^], [2], move the cursor Place it outside the brackets, enter [ ], [b], and click the [OK] button to get the upper semicircle

##6. In the same way, enter negative before entering the above calculation formula. [-] to get the lower semicircle.

##7. Use the text tool to enter the [image of circle equation], enter the equation expression of the circle, and drag it to the appropriate position.

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