Is it possible to select normals in Blender based on the direction they are facing, so they can be flipped? - Quora
![selection tools - Selecting vertices in reference to a plane, ex: Select all vertices to the right of the origin - Blender Stack Exchange selection tools - Selecting vertices in reference to a plane, ex: Select all vertices to the right of the origin - Blender Stack Exchange](https://i.stack.imgur.com/rzTX9.png)
selection tools - Selecting vertices in reference to a plane, ex: Select all vertices to the right of the origin - Blender Stack Exchange
![Select all meshes with same number of faces in edit mode - Basics & Interface - Blender Artists Community Select all meshes with same number of faces in edit mode - Basics & Interface - Blender Artists Community](https://blenderartists.org/uploads/default/optimized/4X/3/7/3/373c068279f147c2d4e48414b48ab1dae7fae607_2_484x500.png)