Hinge Dissection: Gnomon to a Square

Here is a simple dissection that turns a gnomon inside out to form a square. This is a hinged dissection so the pieces stay connected as they swing from one shape to the other.

Steps

1. Cut out the piece from the pattern.
   
2. Cut the interior lines of the piece. Note that there is only one place where you cut through the tabs.
   
3. Fold the tabs up perpendicular to the rest of the model.
   
4. Turn the gnomon inside out to form the square.
   

References

• (G. N. Frederickson 2002, 101-2)