isometric cylinder intersections

[jim78b]

hello how can i intersect the 2 tunnels like in the figure? is difficult? i use isometric projection , snapstyl 1

I can't figure out how the 2 tunnels intersect

 

[ReMark]

This would be a good time to learn 3D.  Did you know that 2D views can be generated from a 3D model?

[jim78b]

I know well i am able use the 3d of course.

[CyberAngel]

I was able to model the intersection by extruding both of the ellipses, making a copy in place of the larger one, and then subtracting it from the smaller one. The trimmed ellipse and the copy remain.

[jim78b]

thank you very much Cyber Angel you had inspired me! with extrude surface and surftrim i obtained what i want!!!