Use the LINE or PLINE command to create basic geometry. If you encounter issues where lines aren't straight, toggle Ortho Mode (F8) .
: If you need to "link" a 3D civil model to a flat 2D drawing for documentation, tools like the FLATTEN or FLATSHOT commands are essential. Learning & Practice Resources : civil autocad 2d drawing link
Converting complex 3D civil objects into flat 2D lines and arcs for subcontractors or clients who only use standard AutoCAD. Why Syncing 2D and 3D Workflows Matters Use the LINE or PLINE command to create basic geometry