Discover the four quadrants
The cartesian plan can be divided into four quadrants, numbered with Roman numerals.
Interact with the applet. Then answer the questions that follow.

What does it mean for a point to be in the first quadrant? You should list 2 criteria.
What does it mean for a point to be in the second quadrant? You should list 2 criteria.
What does it mean for a point to be in the third quadrant? You should list 2 criteria.
What does it mean for a point to be in the fourth quadrant? You should list 2 criteria.