Triangle — Dodecagon (8 pieces)
This is a PP dissection.
Square — Dodecagon (6 pieces)
Discovered by Harry Lindgren (1951).
Pentagon — Dodecagon (10 pieces)
Hexagon — Dodecagon (6 pieces)
The first solution is nicely symmetric, but the second is different to
other published solutions in the use of curved pieces.
Heptagon — Dodecagon (11 pieces)
Octagon — Dodecagon (10 pieces)
Enneagon — Dodecagon (14 pieces)
Enneagon — Dodecagon (13 pieces with 3 turned over)
Decagon — Dodecagon (12 pieces)
The two overlays show the strips before and after the modification of the decagon strip
that saves a piece.
Decagon — Dodecagon (11 pieces with 2 turned over)
The two overlays show the strips before and after the modification of the decagon strip
that saves a piece.
Dodecagon — Icositetragon {24} (25 pieces)
Dodecagon — Pentagram (12 pieces)
Dodecagon — Hexagram (9 pieces)
First discovered by Greg Frederickson.
Dodecagon — Octagram {8/2} (9 pieces)
Dodecagon — Octagram {8/3} (12 pieces)
Dodecagon — Decagram {10/2} (14 pieces)
Dodecagon — Dodecagram {12/2} (13 pieces)
Dodecagon — Dodecagram {12/2} (12 pieces with 1 turned over)
Dodecagon — Dodecagram {12/3} (12 pieces)
Dodecagon — Dodecagram {12/4} (25 pieces with 12 turned over)
Discovered by Greg Frederickson (2002).
Dodecagon — Dodecagram {12/5} (10 pieces)
Discovered by Greg Frederickson (1972).
Dodecagon — Silver Rectangle (7 pieces)
Dodecagon — Golden Rectangle (7 pieces)
Discovered by Harry Lindgren (1964).
Dodecagon — Domino (5 pieces)
Dodecagon — Optimised Rectangle (5 pieces)
Dodecagon — Greek Cross (6 pieces)
Discovered by Harry Lindgren (1961).
Dodecagon — Latin Cross (7 pieces)
Discovered by Harry Lindgren (1951).