Acronym | octpy, K-4.3 |
Name |
octahedral pyramid, half of hex (its vertex-first rotunda) |
Segmentochoron display | |
Circumradius | 1/sqrt(2) = 0.707107 |
Inradius wrt. tet | 1/sqrt(8) = 0.353553 |
Inradius wrt. oct | 0 |
Lace city in approx. ASCII-art |
o4o o4o x4o o4o |
Coordinates |
|
Volume | 1/12 = 0.833333 |
Surface | sqrt(2) = 1.414214 |
General of army | (is itself convex) |
Colonel of regiment | (is itself locally convex) |
Dihedral angles | |
Face vector | 7, 18, 20, 9 |
Confer |
|
External links |
Incidence matrix according to Dynkin symbol
ox3oo4oo&#x → height = 1/sqrt(2) = 0.707107
(pt || oct)
o.3o.4o. | 1 * ♦ 6 0 | 12 0 | 8 0
.o3.o4.o | * 6 ♦ 1 4 | 4 4 | 4 1
------------+-----+------+------+----
oo3oo4oo&#x | 1 1 | 6 * | 4 0 | 4 0
.x .. .. | 0 2 | * 12 | 1 2 | 2 1
------------+-----+------+------+----
ox .. ..&#x | 1 2 | 2 1 | 12 * | 2 0
.x3.o .. | 0 3 | 0 3 | * 8 | 1 1
------------+-----+------+------+----
ox3oo ..&#x ♦ 1 3 | 3 3 | 3 1 | 8 *
.x3.o4.o ♦ 0 6 | 0 12 | 0 8 | * 1
oo3ox3oo&#x → height = 1/sqrt(2) = 0.707107
(pt || oct)
o.3o.3o. | 1 * ♦ 6 0 | 12 0 0 | 4 4 0
.o3.o3.o | * 6 ♦ 1 4 | 4 2 2 | 2 2 1
------------+-----+------+--------+------
oo3oo3oo&#x | 1 1 | 6 * | 4 0 0 | 2 2 0
.. .x .. | 0 2 | * 12 | 1 1 1 | 1 1 1
------------+-----+------+--------+------
.. ox ..&#x | 1 2 | 2 1 | 12 * * | 1 1 0
.o3.x .. | 0 3 | 0 3 | * 4 * | 1 0 1
.. .x3.o | 0 3 | 0 3 | * * 4 | 0 1 1
------------+-----+------+--------+------
oo3ox ..&#x ♦ 1 3 | 3 3 | 3 1 0 | 4 * *
.. ox3oo&#x ♦ 1 3 | 3 3 | 3 0 1 | * 4 *
.o3.x3.o ♦ 0 6 | 0 12 | 0 4 4 | * * 1
xoo3oxo&#x → height(1,2) = sqrt(2/3) = 0.816497 height(1,3) = height(2,3) = 1/sqrt(2) = 0.707107 (({3} || dual {3}) || pt) o..3o.. | 3 * * ♦ 2 2 1 0 0 | 1 2 1 2 2 0 0 | 1 1 2 1 0 .o.3.o. | * 3 * ♦ 0 2 0 2 1 | 0 1 2 0 2 1 2 | 1 0 1 2 1 ..o3..o | * * 1 ♦ 0 0 3 0 3 | 0 0 0 3 6 0 3 | 0 1 3 3 1 -----------+-------+-----------+---------------+---------- x.. ... | 2 0 0 | 3 * * * * | 1 1 0 1 0 0 0 | 1 1 1 0 0 oo.3oo.&#x | 1 1 0 | * 6 * * * | 0 1 1 0 1 0 0 | 1 0 1 1 0 o.o3o.o&#x | 1 0 1 | * * 3 * * | 0 0 0 2 2 0 0 | 0 1 2 1 0 ... .x. | 0 2 0 | * * * 3 * | 0 0 1 0 0 1 1 | 1 0 0 1 1 .oo3.oo&#x | 0 1 1 | * * * * 3 | 0 0 0 0 2 0 2 | 0 0 1 2 1 -----------+-------+-----------+---------------+---------- x..3o.. | 3 0 0 | 3 0 0 0 0 | 1 * * * * * * | 1 1 0 0 0 xo. ...&#x | 2 1 0 | 1 2 0 0 0 | * 3 * * * * * | 1 0 1 0 0 ... ox.&#x | 1 2 0 | 0 2 0 1 0 | * * 3 * * * * | 1 0 0 1 0 x.o ...&#x | 2 0 1 | 1 0 2 0 0 | * * * 3 * * * | 0 1 1 0 0 ooo3ooo&#x | 1 1 1 | 0 1 1 0 1 | * * * * 6 * * | 0 0 1 1 0 .o.3.x. | 0 3 0 | 0 0 0 3 0 | * * * * * 1 * | 1 0 0 0 1 ... .xo&#x | 0 2 1 | 0 0 0 1 2 | * * * * * * 3 | 0 0 0 1 1 -----------+-------+-----------+---------------+---------- xo.3ox.&#x ♦ 3 3 0 | 3 6 0 3 0 | 1 3 3 0 0 1 0 | 1 * * * * x.o3o.o&#x ♦ 3 0 1 | 3 0 3 0 0 | 1 0 0 3 0 0 0 | * 1 * * * xoo ...&#x ♦ 2 1 1 | 1 2 2 0 1 | 0 1 0 1 2 0 0 | * * 3 * * ... oxo&#x ♦ 1 2 1 | 0 2 1 1 2 | 0 0 1 0 2 0 1 | * * * 3 * .oo3.xo&#x ♦ 0 3 1 | 0 0 0 3 3 | 0 0 0 0 0 1 3 | * * * * 1
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