Acronym | sistadip |
Name | square-pentagram duoprism |
© | |
Circumradius | sqrt[(10-sqrt(5))/10] = 0.881132 |
Volume | sqrt[25-10 sqrt(5)]/4 = 0.406150 |
Colonel of regiment | (is itself locally convex) |
Dihedral angles | |
Face vector | 20, 40, 29, 9 |
Confer |
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External links |
As abstract polytope sistadip is isomorphic to squipdip, thereby replacing pentagrams by pentagons, resp. stip by pip.
Incidence matrix according to Dynkin symbol
x4o x5/2o . . . . | 20 | 2 2 | 1 4 1 | 2 2 ----------+----+-------+--------+---- x . . . | 2 | 20 * | 1 2 0 | 2 1 . . x . | 2 | * 20 | 0 2 1 | 1 2 ----------+----+-------+--------+---- x4o . . | 4 | 4 0 | 5 * * | 2 0 x . x . | 4 | 2 2 | * 20 * | 1 1 . . x5/2o | 5 | 0 5 | * * 4 | 0 2 ----------+----+-------+--------+---- x4o x . ♦ 8 | 8 4 | 2 4 0 | 5 * x . x5/2o ♦ 10 | 5 10 | 0 5 2 | * 4
x4o x5/3o . . . . | 20 | 2 2 | 1 4 1 | 2 2 ----------+----+-------+--------+---- x . . . | 2 | 20 * | 1 2 0 | 2 1 . . x . | 2 | * 20 | 0 2 1 | 1 2 ----------+----+-------+--------+---- x4o . . | 4 | 4 0 | 5 * * | 2 0 x . x . | 4 | 2 2 | * 20 * | 1 1 . . x5/3o | 5 | 0 5 | * * 4 | 0 2 ----------+----+-------+--------+---- x4o x . ♦ 8 | 8 4 | 2 4 0 | 5 * x . x5/3o ♦ 10 | 5 10 | 0 5 2 | * 4
x4/3o x5/2o . . . . | 20 | 2 2 | 1 4 1 | 2 2 ------------+----+-------+--------+---- x . . . | 2 | 20 * | 1 2 0 | 2 1 . . x . | 2 | * 20 | 0 2 1 | 1 2 ------------+----+-------+--------+---- x4/3o . . | 4 | 4 0 | 5 * * | 2 0 x . x . | 4 | 2 2 | * 20 * | 1 1 . . x5/2o | 5 | 0 5 | * * 4 | 0 2 ------------+----+-------+--------+---- x4/3o x . ♦ 8 | 8 4 | 2 4 0 | 5 * x . x5/2o ♦ 10 | 5 10 | 0 5 2 | * 4
x4/3o x5/3o . . . . | 20 | 2 2 | 1 4 1 | 2 2 ------------+----+-------+--------+---- x . . . | 2 | 20 * | 1 2 0 | 2 1 . . x . | 2 | * 20 | 0 2 1 | 1 2 ------------+----+-------+--------+---- x4/3o . . | 4 | 4 0 | 5 * * | 2 0 x . x . | 4 | 2 2 | * 20 * | 1 1 . . x5/3o | 5 | 0 5 | * * 4 | 0 2 ------------+----+-------+--------+---- x4/3o x . ♦ 8 | 8 4 | 2 4 0 | 5 * x . x5/3o ♦ 10 | 5 10 | 0 5 2 | * 4
x x x5/2o . . . . | 20 | 1 1 2 | 1 2 2 1 | 2 1 1 ----------+----+----------+-----------+------ x . . . | 2 | 10 * * | 1 2 0 0 | 2 1 0 . x . . | 2 | * 10 * | 1 0 2 0 | 2 0 1 . . x . | 2 | * * 20 | 0 1 1 1 | 1 1 1 ----------+----+----------+-----------+------ x x . . | 4 | 2 2 0 | 5 * * * | 2 0 0 x . x . | 4 | 2 0 2 | * 10 * * | 1 1 0 . x x . | 4 | 0 2 2 | * * 10 * | 1 0 1 . . x5/2o | 5 | 0 0 5 | * * * 4 | 0 1 1 ----------+----+----------+-----------+------ x x x . ♦ 8 | 4 4 4 | 2 2 2 0 | 5 * * x . x5/2o ♦ 10 | 5 0 10 | 0 5 0 2 | * 2 * . x x5/2o ♦ 10 | 0 5 10 | 0 0 5 2 | * * 2
xx xx5/2oo&#x → height = 1
(stip || stip)
o. o.5/2o. | 10 * | 1 2 1 0 0 | 2 1 1 2 0 0 | 1 2 1 0
.o .o5/2.o | * 10 | 0 0 1 1 2 | 0 0 1 2 2 1 | 0 2 1 1
--------------+-------+--------------+--------------+--------
x. .. .. | 2 0 | 5 * * * * | 2 0 1 0 0 0 | 1 2 0 0
.. x. .. | 2 0 | * 10 * * * | 1 1 0 1 0 0 | 1 1 1 0
oo oo5/2oo&#x | 1 1 | * * 10 * * | 0 0 1 2 0 0 | 0 2 1 0
.x .. .. | 0 2 | * * * 5 * | 0 0 1 0 2 0 | 0 2 0 1
.. .x .. | 0 2 | * * * * 10 | 0 0 0 1 1 1 | 0 1 1 1
--------------+-------+--------------+--------------+--------
x. x. .. | 4 0 | 2 2 0 0 0 | 5 * * * * * | 1 1 0 0
.. x.5/2o. | 5 0 | 0 5 0 0 0 | * 2 * * * * | 1 0 1 0
xx .. ..&#x | 2 2 | 1 0 2 1 0 | * * 5 * * * | 0 2 0 0
.. xx ..&#x | 2 2 | 0 1 2 0 1 | * * * 10 * * | 0 1 1 0
.x .x .. | 0 4 | 0 0 0 2 2 | * * * * 5 * | 0 1 0 1
.. .x5/2.o | 0 5 | 0 0 0 0 5 | * * * * * 2 | 0 0 1 1
--------------+-------+--------------+--------------+--------
x. x.5/2o. ♦ 10 0 | 5 10 0 0 0 | 5 2 0 0 0 0 | 1 * * *
xx xx ..&#x ♦ 4 4 | 2 2 4 2 2 | 1 0 2 2 1 0 | * 5 * *
.. xx5/2oo&#x ♦ 5 5 | 0 5 5 0 5 | 0 1 0 5 0 1 | * * 2 *
.x .x5/2.o ♦ 0 10 | 0 0 0 5 10 | 0 0 0 0 5 2 | * * * 1
oqo xxx5/2ooo&#xt → both heights = 1/sqrt(2) = 0.707107 ({5/2} || pseudo (q,x)-stip || {5/2}) o.. o..5/2o.. & | 10 * | 2 2 0 | 1 1 4 0 | 2 2 .o. .o.5/2.o. | * 10 | 0 2 2 | 0 1 4 1 | 2 2 --------------------+-------+----------+----------+---- ... x.. ... & | 2 0 | 10 * * | 1 0 2 0 | 1 2 oo. oo.5/2oo.&#x & | 1 1 | * 20 * | 0 1 2 0 | 2 1 ... .x. ... | 0 2 | * * 10 | 0 0 2 1 | 1 2 --------------------+-------+----------+----------+---- ... x..5/2o.. & | 5 0 | 5 0 0 | 2 * * * | 0 2 oqo ... ...&#xt | 2 2 | 0 4 0 | * 5 * * | 2 0 ... xx. ...&#x & | 2 2 | 1 2 1 | * * 20 * | 1 1 ... .x.5/2.o. | 0 5 | 0 0 5 | * * * 2 | 0 2 --------------------+-------+----------+----------+---- oqo xxx ...&#xt ♦ 4 4 | 2 8 2 | 0 2 4 0 | 5 * ... xx.5/2oo.&#x & ♦ 5 5 | 5 5 5 | 1 0 5 1 | * 4
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