I’m trying to model a staircase where the left/right edges need to align with edge features on the floor beneath the stairs. I’m trying to align these faces (which are N-gons) with an edge along the floor by rotating these faces in the Y-axis. But rotating them by hand yields poor alignment results, and using vertex snapping creates problems where the vertices of the upper steps along the stairs become nonplanar. Is there an easy way to align a face with an edge in some way?
