Bird (left)

Irregular

1-1-1-4M
ByRaymond April 8, 2026April 8, 2026

Mirror, then rotate the lower right cell of the tile 270 degrees counterclockwise.

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Irregular

1-1-1-2M
ByRaymond April 8, 2026April 8, 2026

Mirror, then rotate the lower right cell of the tile 90 degrees counterclockwise.

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Irregular

1-1-1-3
ByRaymond April 4, 2026April 7, 2026

Rotate the lower right cell of the tile 180 degrees.

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Alternate Cells | Regular

1-4M-4M-1
ByRaymond April 4, 2026April 5, 2026

Mirror, then rotate alternate cells 270 degrees counterclockwise.

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Alternate Cells | Alternate Columns | Alternate Rows | Regular

1-1-1-1
ByRaymond April 4, 2026April 5, 2026

This is the first pattern in the Library. All other patterns derive from this one. This is the only single-shape tessellation in the Library. One shape — the bird — fits against itself to fill the plane perfectly.

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