About Flipping the Angle of Flat Walls
You can use the 
command adjacent to the angle box when creating or redefining a flat wall to flip the wall orientation along the attachment edge. To make the command available on the Flat tab and shortcut menu, set the smt_allow_flip_sketch configuration option to yes.
command adjacent to the angle box when creating or redefining a flat wall to flip the wall orientation along the attachment edge. To make the command available on the Flat tab and shortcut menu, set the smt_allow_flip_sketch configuration option to yes. | When you flip the angle of a sketch, the wall is mirrored about a plane to keep the symmetry. |