midpoint of line

Is there a way to fine the midpoint of a line and the midpoint of two contour points.

perfect thank you

To find the midpoint of the line, just select the line with your select tool, and it should be in the centre of the bounding box (unless it’s a very curvy line).

To find the midpoint between two contour points, you can try to select those contour points then turn on the Contour Editor Controls in the tool properties. This shows a bounding box which should be centered on your selection.