Acronym	thetrat
Name	truncated order 7 triangular tiling, hyperbolic order 7 truncated trigonal tiling
	© ©
Circumradius	sqrt[(3-cos2(π/7))/(3-4 cos2(π/7))] = 2.976586 i
Vertex figure	[7,62]
External links

Incidence matrix according to Dynkin symbol

x3x7o   (N → ∞)

. . . | 42N |   1   2 |   2  1
------+-----+---------+-------
x . . |   2 | 21N   * |   2  0
. x . |   2 |   * 42N |   1  1
------+-----+---------+-------
x3x . |   6 |   3   3 | 14N  *
. x7o |   7 |   0   7 |   * 6N