Old symbol of interlaced triangles, in various forms.
Triquetra (3 crossings) [edit]
-
Unicursal (equivalent to trefoil knot / triquetra)
-
-
-
-
-
-
Borromean (6 crossings) [edit]
-
Equivalent to Borromean rings
-
-
-
-
-
-
Other forms (not found in ancient carvings [edit]
-
6 crossings, but not alternating (i.e. not equivalent to Borromean rings)
-
-
-
Two mutually interlaced (30 crossings)
-
Complex quasi-valknut (9 crossings)
-
Alternate 9 crossings depiction