Protractor lines intersection not snapping

In attached model in scene titled PROTRACTOR INTERSECTION NOT SNAPPING I have drawn intersecting guides with Protractor and they appear from looking at different views to be on the same plane but I cannot draw a line to the intersection point of the Protractor guides.

Here is model …1016_building.skp (2.7 MB)

The guides do not intersect (look from the Top View), bring them in the same plane for that.

Thank you for providing the animation! I followed your steps and created the roof profile. Really appreciate your help!