Dissection of two polygons to one

Author : Gavin Theobald

{3}	Triangle
{4}	Square
{5}	Pentagon
{6}	Hexagon
{8}	Octagon
{10}	Decagon
{12}	Dodecagon
{6/2}	Hexagram
{8/2}	Octagram
{8/3}	Octagram

Triangle - 2 x Triangle

Triangle - 2 × Triangle (5 pieces)

Square - 2 x Square

Square - 2 × Square (4 pieces)

Pentagon - 2 x Pentagon

Pentagon - 2 × Pentagon (9 pieces)

Hexagon - 2 x Hexagon

Hexagon - 2 × Hexagon (8 pieces with 3 turned over)

Octagon - 2 x Octagon

Octagon - 2 × Octagon (8 pieces)

Decagon - 2 x Decagon

Decagon - 2 × Decagon (16 pieces)

Dodecagon - 2 x Dodecagon

Dodecagon - 2 × Dodecagon (10 pieces)

Hexagram - 2 x Hexagram

Hexagram - 2 × Hexagram (11 pieces)

First discovered by Anton Hanegraaf (before 1990).

Octagram - 2 x Octagram

Octagram - 2 × Octagram (11 pieces)

Discovered by Harry Lindgren (1964).

Octagram - 2 x Octagram

Octagram - 2 × Octagram (12 pieces)

Discovered by Harry Lindgren (1964).