[size=200][b]Calculate the area of CENTRAL PARK located in Manhattan (New York) in km²[/b][/size][br][br][color=#9900ff]1st. Activate the "Polygon" tool [icon]/images/ggb/toolbar/mode_polygon.png[/icon] to draw a quadrilateral "Q" defined by the vertices "A", "B", "C" and "D".[/color][br][br][color=#9900ff]2nd. Click on the 4 corners of CENTRAL PARK in counter-clockwise direction and finish the quadrilateral by clicking on the first point again.[/color][br][br][color=#9900ff]3rd. Name the quadrilateral "Q".[/color][br][br][color=#9900ff]4th. Activate the "Area" tool [icon]/images/ggb/toolbar/mode_area.png[/icon].[/color][br][br][color=#9900ff]5th. Clicking inside the quadrilateral you will see the CENTRAL PARK area in km². If the vertices are very far from the corners of the park, activate the "Move" tool [icon]/images/ggb/toolbar/mode_move.png[/icon] and start them.[/color][br][br][color=#000000]The two curved arrows located in the upper right corner of the Graphics View allow you to reset the activity.[/color][br][color=#000000]If the activity is correct, you will get 10 points automatically.[/color]