Ceiling slanted corner:
Inverted oblique slope:
Inverted slopes intersection:
Super Slopes now also includes the Hedges mod by Kaevator.
Hedges adds pruners which help you craft 4 different shapes out of your hedges or leaves. As of right now this only is for Oak Leaves!
Just right click an oak leaf block with the pruners and you will transform it right click again and again and you get to the final transformation. Their is a total of 3 shapes shown above.