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Primitive Perfect Isosceles Right Triangled Square

Title: _d 19:178BH2of4 GHM

Order: 19

Horizontal side: 178 Vertical side: 178

Elements: 5√2, 10, 12, 10√2, 20, 15√2, 25, 19√2, 20√2, 25√2, 38, 32√2, 38√2, 57, 64, 57√2, 89, 121, 89√2.

Code: 1215 0 57 894 89 89 893 178 89 324 121 57 203 153 69 252 178 64 251 178 89 123 133 57 105 133 59 104 143 59 156 138 54 643 178 0 202 153 39 54 138 54 577 0 57 570 57 57 384 95 19 383 133 19 194 114 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)

121
89√2
89
32√2
20
25√2
25
12
10
10√2
15√2
64
20√2
5√2
57
57√2
38√2
38
19√2