Decagon Dissections
Author : Gavin Theobald
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{3}
Triangle
{4}
Square
{5}
Pentagon
{6}
Hexagon
{7}
Heptagon
{8}
Octagon
{9}
Enneagon
{12}
Dodecagon
{20}
Icosagon
{5/2}
Pentagram
{6/2}
Hexagram
{8/2}
Octagram
{8/3}
Octagram
{10/2}
Decagram
{10/3}
Decagram
{12/2}
Dodecagram
{R
√2
}
Silver Rectangle
{R
ϕ
}
Golden Rectangle
{R
2
}
Domino
{G}
Greek Cross
{L}
Latin Cross
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
7
7
9
9
8
11
10
13
1
12
11
21
5/2
6/2
7/2
7/3
8/2
8/3
9/2
9/3
9/4
10/2
10/3
10/4
12/2
12/3
12/4
12/5
6
9
13
12
14
21
12
Triangle — Decagon (7 pieces)
Square — Decagon (7 pieces)
Pentagon — Decagon (9 pieces)
Hexagon — Decagon (9 pieces)
Hexagon — Decagon (8 pieces with 3 turned over)
Heptagon — Decagon (11 pieces)
Octagon — Decagon (10 pieces)
Enneagon — Decagon (13 pieces)
Decagon — Dodecagon (12 pieces)
Decagon — Dodecagon (11 pieces with 2 turned over)
Decagon — Icosagon {20} (21 pieces)
Decagon — Pentagram (6 pieces)
Discovered by Harry Lindgren (1964).
Decagon — Hexagram (9 pieces)
Decagon — Octagram {8/2} (13 pieces)
Decagon — Octagram {8/3} (12 pieces)
Decagon — Decagram {10/2} (14 pieces)
Decagon — Decagram {10/3} (21 pieces)
Decagon — Dodecagram {12/2} (12 pieces)
Decagon — Silver Rectangle (7 pieces)
Decagon — Golden Rectangle (6 pieces)
Decagon — Domino (7 pieces)
Decagon — Greek Cross (10 pieces)
Decagon — Latin Cross (10 pieces)
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