man...
I apologize for leaving you hanging, OP, though you got some sound advice it seems. I deleted the subscription to the thread and got myself left out of a good exchange it seems. You're probably way past the point of being able to use the info, but replying to your post of way back when... You'd use the "red" numbers for any rafters/jacks other than an actual hip or valley member. The dashed line between the 80* mark and 5" is the one used to mark long cuts. Most long cuts are longer than the speed square will allow to be marked in a single pass, thus the dashed line allows you to use the longest side of the square to mark them. To clarify, I was only mentioning that a "rafter" square has the information you were first seeking stamped into the side of its body, but a speed square also simplifies things if you know its versatility.
Shouldn't the green triangle be on the other side of the pink roof in your pic? It's pretty easy to see what you need to do once you get going on these kinds of things. Your method of running a string to see what's going on can be used in determing where valleys go and what rafters you need to fill in. If you build in the common rafters and string across the plane they create, that is. I'd have used conventional rafters for the whole thing to get the points to work, though you could make the trusses work using methods that might draw criticism online but would pass any inspection in the land.
Day(s) late, dollar(s) short...
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