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Primitive Perfect Isosceles Right Triangled Square

Title: _r 18:67AA4of4 GHM

Order: 18

Horizontal side: 67 Vertical side: 67

Elements: 2√2, 4, 5, 4√2, 5√2, 8, 10, 10√2, 15, 17, 21, 25, 19√2, 29, 21√2, 25√2, 38, 42.

Code: 425 0 25 381 38 67 192 57 48 291 67 67 153 57 33 105 57 38 55 57 33 54 62 33 173 67 21 46 38 29 85 42 25 104 52 23 255 0 0 254 25 0 43 50 21 22 52 23 210 46 21 211 67 21

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)

42
38
19√2
29
15
10
5
5√2
17
4√2
8
10√2
25
25√2
4
2√2
21√2
21