One-sided Bridged Polytans of Order 1..3
In my section about bridged polytans some constructions
with pieces of order 1..3 are shown. Later
I printed the 195 pieces with a total area of 284 squares using left filament of different colors.
single tan: yellow, two tans: violet, three tan: green and red.
Then I wanted to construct some figures, which can be scaled down by a factor of sqrt(2) to get two similar
ones. A square of size 12*sqrt(2) with a hole shaped like a ditan can be made. I chose the square with
the hourglass hole as an example.
A figure with square symmetry is a square ring of size 13*sqrt(2) with a square hole and 4 triangles
removed at each corner.
The cross has also square symmetry but no holes.
A star shaped like a hexatan with a square hole is symmetric under 90 degree rotation.
For the star with eight spokes two scaled down copies aren't possible, because at the spokes a
single tan is missing.