I am trying to split polygons using the 'Split Features' tool. This works for most polygons except for the ones that consist of a full circle such as the selected polygon in the snapshot below:

enter image description here

I also tried using 'Split selected features with selected line from another layer'. This does not work either.

  • What happens if you try to split it? Does an error message pop up and if so, what is the message?
    – Joseph
    Commented Jan 23, 2017 at 14:55
  • There's no error message. I place the line by left clicking twice, when I then right-click the red line disappears.
    – Lilly
    Commented Jan 23, 2017 at 15:01

1 Answer 1


In order to solve this issue the polygon had to be split at two places simultaneously. i.e. when using 'Split Features' make sure that the line drawn intersects the polygon twice.

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