Triangle - Heptagon (8 pieces)
Square - Heptagon (7 pieces)
Pentagon - Heptagon (9 pieces)
Hexagon - Heptagon (8 pieces)
Heptagon - Octagon (11 pieces)
Heptagon - Octagon (10 pieces with 1 turned over)
Heptagon - Enneagon (13 pieces)
Heptagon - Decagon (11 pieces)
Heptagon - Hendecagon (15 pieces)
Heptagon - Dodecagon (11 pieces)
Heptagon - Tetradecagon (15 pieces)
Heptagon - Pentagram (11 pieces)
Heptagon - Hexagram (9 pieces)
Heptagon - Heptagram (15 pieces)
Discovered by Anton Hanegraaf.
Heptagon - Heptagram (13 pieces)
Heptagon - Octagram (13 pieces)
Heptagon - Octagram (12 pieces)
Heptagon - Dodecagram (11 pieces)
Heptagon - Tetradecagram (12 pieces)
This is a modification of a dissection found by Greg Frederickson.
My variation is more symmetric, but uses the same number of pieces.
In Frederickson's first book he mentions an 11 piece version of this
dissection, but he has not been able to find a copy of it. Either he
miscounted the number of pieces, or there is a forgotten trick to save
a piece. So, can you improve this dissection?
Heptagon - Golden Rectangle (7 pieces)
Heptagon - Greek Cross (9 pieces)
Heptagon - Latin Cross (8 pieces)