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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:70AO GHM

Order: 19

Horizontal side: 70 Vertical side: 70

Elements: 2√2, 4, 4√2, 7, 8, 7√2, 10, 8√2, 14, 10√2, 16, 20, 21, 16√2, 20√2, 21√2, 28√2, 40, 35√2.

Code: 405 0 30 354 35 35 216 49 49 143 49 35 215 49 28 74 42 28 73 49 28 205 0 10 204 20 10 20 40 30 280 38 28 164 54 12 163 70 12 84 62 4 83 70 4 105 0 0 104 10 0 44 66 0 43 70 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
35√2
21√2
14
21
7√2
7
20
20√2
2√2
28√2
16√2
16
8√2
8
10
10√2
4√2
4