Triangle, n = 11 record

A = 0.036529889880029…
full precision

Exact value of the published coordinate literals: 0.036529889880029800850674405395

17 triangles tie for the minimal area.

Symmetry

Mirror symmetric (group D1, order 2). (Friedman's page says: reflectional symmetry.)

Minimal triangles

17 triangles tied (within relative 10−9) at the minimal area, in 9 congruence classes:

countside lengthstriangles (point indices)
2 0.3731 · 0.4598 · 0.8131 (0,3,9) (3,4,10)
2 0.3731 · 0.4662 · 0.8199 (3,4,5) (3,8,9)
2 0.2817 · 0.6764 · 0.9428 (2,5,8) (5,6,8)
2 0.2881 · 0.8515 · 1.1298 (0,1,6) (2,7,10)
2 0.4598 · 0.6970 · 1.1495 (0,5,9) (4,8,10)
2 0.5395 · 0.6351 · 1.1679 (1,2,3) (3,6,7)
2 0.5213 · 0.6970 · 1.2122 (0,4,8) (5,9,10)
2 0.5213 · 0.7248 · 1.2403 (0,2,4) (6,9,10)
1 0.5395 · 0.5395 · 1.0704 (1,3,7)

Provenance

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References