how to know if the normals of an object is flipped or not. cause 2.8 has only the same colors of normals and i cant identify if its a flipped normal. unlike the previous versions that there are to colors of the faces white is a real object while light purple is a flipped normal
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1$\begingroup$ In 2.8 it's different now, to preview normals orientation you have to use Overlays menu and enable preview mode there. See blender.stackexchange.com/questions/119408/… $\endgroup$ – Mr Zak Jul 18 '19 at 18:25
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Go into edit mode
Select the overlays drop down and click on the button shown in the picture below
You will see blue lines in the direction the faces are facing
