Select polygons that are on one side of a polyline but not the other.

Discussion created by jocko333 on Jun 14, 2013
Latest reply on Jun 28, 2013 by dlee-esristaff
How does one select polygons that are to the left side of a polyline.
I have 2 shoreline layers - (1970 & 2010). I need to know the shoreline gain and shoreline loss. So I created polygons of the areas where there is overlap - this gives me net change. But to identify which polygons are gain and which ones are loss depends on their relation to the 1970 shoreline. So I need to select polygons that are on the outisde (gain) and then those on the inside (loss). Is there a tool for this? E.g. I need to select only the red polygons in the diagram attached? Your help will be much appreciated.