So the first triangle I made I struggled with, it’s not really how my brain likes to work, but it was good practice.
For the second part of the wedge challenge, I got rid of that extra edge on the first one and pushed it aside. I decided I wanted to try and find a way of making a wedge in a way I would remember how to do.
After centring properly I dissolved the top right edge, which made a small triangle/wedge. I then hit g-y-2 on the bottom edge (point) to get it to stretch to the right length. This way there also wasn’t an extra edge or vertices on the bottom center.