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Apr 20, 2016 at 8:49 vote accept Dylon Grogan
Apr 19, 2016 at 20:14 history edited PolyGeo CC BY-SA 3.0
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Apr 19, 2016 at 17:07 comment added gene It is a problem of analytical geometry and for the principles, look at How to draw perpendicular lines in QGIS?
Apr 19, 2016 at 15:00 answer added Richard Fairhurst timeline score: 5
Apr 19, 2016 at 14:38 comment added Goldring Can you post a picture and expand a bit? It's a bit unclear what you're asking for.
Apr 19, 2016 at 14:16 history asked Dylon Grogan CC BY-SA 3.0