Changing Angles in Sketches with Other Elements

[Anonymous]

I'm very new to Fusion 360 - my first project is to design a fish tank siphon hose interface that I can 3d print after my original one failed.  I'm trying to use sketch mode to make a ribbed "funnel" that will be pushed into the tube that goes into the fish tank, so I created a parallelogram and added a bunch of ridges along one side, so that I could then do a Revolve to make the full piece. 

That took me a bit to figure out, but it's going great... except that I got the bottom measurement off on my initial parallelogram.  I need to move the bottom (the 10.204 mm measurement) out by several mm, but that wreaks all sorts of havoc with the ridge that I made.  Is it possible to "anchor" the circles that form those ridge onto the (now non-existent) angled line so that I can smoothly move them all when I adjust that bottom position?

[etfrench]

The easy way would be to:

1. Delete the two bottom vertical lines.
2. Select all of the geometry above them.
3. Move the selected geometry by rotating clockwise around the upper right corner.

[lichtzeichenanlage · Accepted solution]

If you want to have a parametric design, you want to constrain your sketch. I did a simplified version of your design in this screencast: