Constraints doubt

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Why i can place constraint in both planes of this object but i cant select the "borders" (all the curved stuff)? the image shows it

5462

sorry if its a silly question :P im a noob on inventor, i do know autocad but im need to learn lot of new stuff..
anyway, thnkx in advance

[Lazer]

Not sure on your question? do you mean the fillets (borders / curved stuff)?

You can use the TANGENT constraint.

[JD Mather]

Mate constraint works on planar faces, points or axis. You will probably need Transitional or Tangent.

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LOL i was right, it was a silly question :P
thnks both you guys