Still don’t know how to draw a line segment of known length? Some friends who have just come into contact with the Geometric Sketchpad software recently said they still don’t understand it. Today I will introduce to you the operation of drawing a line segment of known length with the Geometric Sketchpad. Come and follow the editor to take a look!

Operation method one: Use new parameters to draw line segments

Create a new parameter t. Execute "Data" - "New Parameter", set the value in the pop-up dialog box to 4.03, select "Distance" as the unit, click "OK", and a parameter t will appear in the upper left corner of the drawing board;

Select the moving arrow tool in the toolbox on the left, select parameter t, click the "Transform" menu, and select the "Mark Distance" command in its drop-down menu;

Select the point tool in the toolbox on the left, draw point A on the drawing board, select point A, click the "Transform" menu, and select "Translation" in its drop-down menu. This will open the "Translation Dialog Box" and change the angle to 0. Click "OK" and you will get another point, marked B.

Select point AB, click the "Construction" menu, and in its drop-down menu, select "Line Segment", thus obtaining a line segment AB with a length of 4.03 cm, as shown in the figure below.

Operation method two: Directly enter the specified translation distance

Select the point tool in the toolbox on the left and click on the blank space with the mouse to get a point, recorded as A, as an endpoint of the line segment.

Select point A, select the Move Arrow tool in the left toolbox, click the "Transform" menu, and in its drop-down menu, select "Translation" to open the "Translation Dialog Box". Enter 4.03 in the "Amount" column, and the angle is 0, click "OK", and a new point will appear on the right side of point A, marked as B.

Hold down the shift key and click on points A and B. Points A and B are selected, and then execute the "Construction" - "Line Segment" command to create a line segment AB with a specified length of 4.03 cm.

Friends who don’t know the related operations of drawing line segments of known length on the geometric sketchpad, don’t miss this article brought by the editor.