Impossible Figure: 2007-06-30

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This figure does not have a corresponding orthographically projected figure. It is basically an impossible tribar, but in actuality it is a spiral that goes into itself. If this was drawn without perspective, it would just look like an expanding spiral or a normal tribar, depending on how you interpret it.

Tribar4
2007-06-30

Linework | Fillwork

This is not just a tribar, it is a spiral that starts at the cutaway and then travels into the picture. Where it should go behind itself it instead intersects and continues inside itself.