Here is the drawing of how to do a panel transition:
Start by getting the pitch of your transition.
Bend the ruler into itself to see what exact degree is. In this case it is 140°. Subtract your pitch angle from 180.
Use the chart to scale what your angle bi-sector should be.
Bend up the metal to the desired height.
Crimp the metal at the angle bisector.
Make a second crimp on the right angle.
Bend up the material