IS there a way to split blocks in qgis aside from the split features"
for example i want to select a polygon and have it split as required: 
is it better to have the lines in a separate layer or have the polygons themselves split ..
EDIT: what im trying to achieve is not splitting the polygon i just want the outline of being split .. that being with a line or by splitting the polygon itself doesnt make a difference
what i need to is speed the process of getting the splitting outline
and i don`t need the polygon to be split by even if another line layer appears to split the polygons
if you`d check the second photo i posted it would make it clearer
– AsdAsd Aug 24 '17 at 06:25