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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:80AI GHM

Order: 19

Horizontal side: 80 Vertical side: 80

Elements: 1, 3√2, 6, 6√2, 8√2, 9√2, 10√2, 16, 18, 19, 20, 16√2, 18√2, 20√2, 21√2, 24√2, 40, 32√2, 40√2.

Code: 405 0 40 404 40 40 326 48 48 186 30 30 242 72 24 202 20 20 201 20 40 195 20 21 104 30 30 80 72 24 17 20 21 210 21 21 181 39 21 92 48 12 160 64 16 161 80 16 66 42 6 36 39 3 65 42 0

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

40
40√2
32√2
18√2
24√2
20√2
20
19
10√2
8√2
1
21√2
18
9√2
16√2
16
6√2
3√2
6