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Primitive Perfect Isosceles Right Triangled Square

Title: _d 18:90AL GHM

Order: 18

Horizontal side: 90 Vertical side: 90

Elements: 1, 4√2, 7, 5√2, 8, 7√2, 10, 9√2, 14, 10√2, 14√2, 28, 31, 38, 45, 52, 38√2, 45√2.

Code: 525 0 38 454 45 45 453 90 45 74 52 38 73 59 38 85 59 37 311 90 45 387 0 38 380 38 38 104 48 28 103 58 28 52 63 33 11 59 38 44 63 33 90 67 37 281 76 28 142 90 14 143 90 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)

52
45√2
45
7√2
7
8
31
38
38√2
10√2
10
5√2
1
4√2
9√2
28
14√2
14