# polar coordinates : Java Glossary

polar coordinates
Many geometric shapes, such as circles, spirals and polygons are easier to describe in polar coordinates, with an angle and radius instead of x,y. You have a central point and you measure the angle in radians counter clockwise from due east. You measure the radius as the distance from the centre.
Polar Cartesian Java Drawing

You can convert polar coordinates to Cartesian x,y coordinates with:

```// polar to Cartesian