COORDINATE BATTLE on the Cartesian Plane

GAME INFO
Cartesian coordinates game ("Quadrant Commander from Mathnook") in the form of a space battle on the Cartesian plane, an online educational math game. The objective is to review the Cartesian coordinate system, negative numbers and the numeric keypad. We advise you to use the keyboard to type the coordinates, because the in-game keyboard sometimes does not work. Use the “dash” key to type a negative number. To shoot, press the ENTER key, and fire at the coordinate point you have indicated. Kill all the ships that invade the space of your ship.