C3. “Compass” tool
Draw two circles
Use the "Compass" tool to draw circles selecting a segment or two points to specify the radius and clicking on a point that should be the centre of the new circle.
1st. Activate the "Compass" tool 
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2nd. Click on segment "s" and then on point "C", which will be the centre of the circle "d".
3rd. Click on circle "c" and then on point "C", which will be the centre of the circle "e". You will get two concentric circles.
4th. Activate the "Point" tool 
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5th. Click on circle "d". The point "D" appears.
6th. Click on circle "e". The point "D" appears.
7th. Activate the "Move" tool 
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8th. Open the Context Menu for the point "D" and click on "Animation on" option.
9th. Open the Context Menu for the point "E" and click on "Animation on" option.
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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2nd. Click on segment "s" and then on point "C", which will be the centre of the circle "d".
3rd. Click on circle "c" and then on point "C", which will be the centre of the circle "e". You will get two concentric circles.
4th. Activate the "Point" tool .
5th. Click on circle "d". The point "D" appears.
6th. Click on circle "e". The point "D" appears.
7th. Activate the "Move" tool .
8th. Open the Context Menu for the point "D" and click on "Animation on" option.
9th. Open the Context Menu for the point "E" and click on "Animation on" option.
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.