Splitting a polygon by an overlapping line / polyline feature automatically is a very useful tool, for example you can use this tool to separate a forest area using a river or road line.
UTM Geo Map is equipped with a geometry tool to split polygon using lines / polyline with just 2 clicks, for more details please see the following video:
Module to use: Area/Distance
Steps: Open Area/Distance module > Click on existing polygon > Click Split Polygon By Line menu > Click overlap line / polyline on the map
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