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The Cartesian plane is composed of two perpendicular axes. Their intersection defines the origin of the plane. Each axis is graduated starting from the origin.

- The horizontal axis is the abscissa axis (also known as the "x axis"),
- The vertical axis is the ordinate axis (also known as the "y axis").

These axes divide the cartesian plane into four quadrants.

A point is located in the Cartesian plane by its abscissa "x" and its ordinate "y". Together in this order, (x,y) constitutes the coordinates of the point.

**Move** the points in the Cartesian plane. **Click** on the labels. **Click** on the quadrants.

- To identify the coordinates of a point.
- To localize a point in a grid.
- To explore the symmetrical properties in regards to the abscissa axis and the ordinate axis.

The **origin** of the grid has (0,0) as its coordinates.

All the points located on the **abscissa axis** have a null ordinate value: (x,0)

All the points located on the **ordinate axis** have a null…