D3. The "Transtale by Vector" tool
Move the dolphin with a vector
The vectors are very useful for moving objects, giving the direction, the orientation and the distance of the displacement.
1st. Activate the "Vector" tool 
.
2nd. Click on two places in the Graphics View, not on the dolphin.The points "A", "B" and the vector "u" appear.
3rd. Activate the "Transtale by Vector" tool 
.
4th. Click first the dolphin and then the vector "u". You'll get a displaced dolphin.
Activate the "Move" tool 
and move the points, the vector and the original dolphin.
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.
.
2nd. Click on two places in the Graphics View, not on the dolphin.The points "A", "B" and the vector "u" appear.
3rd. Activate the "Transtale by Vector" tool .
4th. Click first the dolphin and then the vector "u". You'll get a displaced dolphin.
Activate the "Move" tool and move the points, the vector and the original dolphin.
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.