Triangle — Enneagon (8 pieces)
This dissection makes use of the TT2
technique.
Previously Freese found a 9 piece solution to this dissection. In Lindgren's
book he states “The conclusion is that if you can beat Freese, you will
have found a needle in a haystack”. I found the needle! This was one of the
first dissection improvements that I found, and I am particularly pleased with
it.
Square — Enneagon (9 pieces)
Pentagon — Enneagon (10 pieces)
Hexagon — Enneagon (11 pieces)
Hexagon — Enneagon (10 pieces with 1 turned over)
Heptagon — Enneagon (13 pieces)
Octagon — Enneagon (12 pieces)
Enneagon — Decagon (13 pieces)
Enneagon — Dodecagon (14 pieces)
Enneagon — Dodecagon (13 pieces with 3 turned over)
Enneagon — Octadecagon (19 pieces)
Enneagon — Pentagram (14 pieces)
Enneagon — Hexagram (11 pieces)
Enneagon — Octagram {8/2} (15 pieces)
Enneagon — Octagram {8/3} (13 pieces)
Enneagon — Enneagram {9/2} (19 pieces)
Enneagon — Enneagram {9/3} (19 pieces with 9 turned over)
Discovered by Greg Frederickson (2002).
Enneagon — Decagram {10/2} (17 pieces)
Enneagon — Dodecagram {12/2} (14 pieces)
Enneagon — Octadecagram {18/2} (17 pieces)
Enneagon — Silver Rectangle (9 pieces)
Enneagon — Golden Rectangle (9 pieces)
Enneagon — Domino (9 pieces)
Enneagon — Optimised Rectangle (7 pieces)
Enneagon — Greek Cross (11 pieces)
Enneagon — Latin Cross (10 pieces)