Use the Position 
dialog to enter the coordinates of a point. This is useful when it is not sufficient to use the cursor.
To display the Position dialog, click Position on the status bar, or click on any dialog.
- Cartesian — Uses Cartesian coordinates.
- Polar — Uses polar coordinates.
- Circle — Calculates the centre and radius of a circle from three points.
- Between — Calculates a new point between two existing points.
The Cartesian and Polar tabs are always synchronised as there is a single underlying point represented in two different ways.