B3. The "Regular Polygon" tool
Draw the regular polygon in the Graphics View
GeoGebra allows you to draw regular polygons with two points that represent the first two vertices and the amount of sides you can write in a dialogue window.
1st. This activity can be applied from the equilateral triangle to the regular octagon.
2nd. Activate the "Regular polygon" tool 
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3rd. Click on two positions in the Graphics View and a dialog window will appear asking for the number of vertices.
4th. Enter the number of vertices of the requested polygon and click on the "OK" button.
5th. Name "P" the polygon.
Activate the "Move" tool 
and drag points "A" and "B".
The two curved arrows located in the upper right corner of the Graphics View allow you to reset the activity.
If the activity is correct, you will get 10 points automatically.
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3rd. Click on two positions in the Graphics View and a dialog window will appear asking for the number of vertices.
4th. Enter the number of vertices of the requested polygon and click on the "OK" button.
5th. Name "P" the polygon.
Activate the "Move" tool and drag points "A" and "B".
The two curved arrows located in the upper right corner of the Graphics View allow you to reset the activity.
If the activity is correct, you will get 10 points automatically.