I am trying to create geometric shapes by joining closed paths together, as shown in this example

enter image description here

However, when adding stroke to the paths, each object create its own corners:

enter image description here

I tried creating a compound path with the 3 objects selected but I had no luck. How can I avoid this?

  • 2
    Use round corners or make the outermost triangle the main object
    – joojaa
    Oct 2, 2017 at 16:17
  • What's a main object joojaa? I think this could be what I'm looking for Oct 2, 2017 at 16:29
  • Setting the path to inside the stroke line could help.
    – ispaany
    Oct 2, 2017 at 17:51

2 Answers 2


After you merge the shape you simply need to select the rounded corners option in the Stroke menu.

enter image description here


You can not, there is no such thing as a three way curve end. See there ate two simple generalizations of curves:

  1. Each and every segment is separate, this can not span an area
  2. Or a multi segment curve where each curve end follows a second end. This allows you to make closed areas.

Admittedly you could expand this to a network mesh. But the complexity from a users perspective would blow up. Meshes are just harder to handle and you would have even more cryptic problems than you have now (how would you round a 3 way join?) And quite frankly theres more things we could use our time on.

So how do you solve this? Essentially 2 ways, which incidentally are the related to the ways to model thing above:

  1. Use a corner type that is the same in all configurations. In other words use round corners. No problems.
  2. Don't think of the internal lines as closed shapes, but separate lines.

enter image description here

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