Leave only the main roof sketch line slope defining and it will continue to slope down to the next sketch line.
Revit how to slope a roof.
In the option bar make sure define slope.
So basically edit sketch of the highlighted roof and trace the edge of the front roof then make sure none of the new lines are slope defining.
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2 modify properties to adjust roof slope.
3 modify each.
Use a slope arrow to define the slope.
Want to create a sloped roof.
Click on a roof and change the angle in the slope properties.
On the properties palette specify a cutoff level for the roof.
Define a sloped edge to a sketch line.
Create another footprint roof sketch at a higher level.
Create a roof slope using slope arrows create a footprint roof sketch similar to the following.
8 tips to create sloped roofs in revit 1 check define slope to create a sloped roof.
Then use join geometry to clean it up.
Click finish edit mode.
For example if you are sketching the roof on level 2.