The operation process of drawing a 5cm line segment on the geometric sketchpad

New parameters. Open the geometric sketchpad, click [Data] - [New Parameter] on the menu bar, and in the pop-up New Parameter dialog box, change the name to the length of the line segment, the value to 5, and select the distance, click OK to get the parameters.

Mark distance. Select the parameters created in the previous step and click [Transform] - [Mark Distance] on the menu bar to determine the length of the line segment created.

Draw points and translate points. Select the point tool, draw a point A and select it; execute the menu [Transform] - [Translation], change the fixed angle to 0 in the pop-up dialog box, click the translation button, and you can get the point A' after the point A is translated by 5 cm. .

Construct line segment AA’. Select points A and A’, and execute the menu [Construction]-[Line Segment] command to get the line segment AA’.

Tip: The advantage of using the above method to draw a line segment of known length is that the length of the line segment can be changed as long as the value of the parameter is changed.

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