How to select all points when drawing on the geometric sketchpad

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Release: 2024-04-17 10:30:20
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As shown in the figure, the midpoints D, E, and F of the three sides are constructed in △ABC, so how can you select the vertices and midpoints of the triangle?

How to select all points when drawing on the geometric sketchpad

Method 1. Select each point in turn

Select the moving arrow tool in the mathematics courseware creation tool, and then click points A, B, and C in sequence , D, E, F to select each point. There are no shortcuts to this method. Although it can meet the requirements, it takes a certain amount of time and is not recommended for teachers to use when making courseware.

Method 2: Execute the Select All Points command

1. Select the point tool, then click the [Edit] menu in the upper menu bar, and select [Select All Points] in its drop-down menu, as shown in the figure shown.

How to select all points when drawing on the geometric sketchpad

#2. After executing the above command, all points (including vertices and midpoints) can be selected. As shown in the figure, all points are highlighted.

How to select all points when drawing on the geometric sketchpad

Method 3. Use the Ctrl A shortcut key

The Ctrl A shortcut key means to select all. In the above figure, geometric objects other than points are not. There are a lot, so you can select them all first and click each edge with the mouse to deselect it, which will also select all points.

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source:zol.com.cn
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