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Primitive Perfect Isosceles Right Triangled Square

Title: __ 19:154AA GHM

Order: 19

Horizontal side: 154 Vertical side: 154

Elements: 6, 6√2, 12, 9√2, 12√2, 21, 17√2, 20√2, 21√2, 34, 40, 42, 34√2, 40√2, 63, 74, 80, 60√2, 74√2.

Code: 807 0 154 740 80 154 741 154 154 66 0 74 125 6 68 124 18 68 210 30 80 211 51 80 637 51 80 206 94 60 407 114 80 406 114 40 65 0 68 342 34 34 94 9 59 600 94 60 421 51 59 343 34 0 172 51 17

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)

80
74√2
74
6√2
12
12√2
21√2
21
63
20√2
40
40√2
6
34√2
9√2
60√2
42
34
17√2