Acronym | dap, 10-ap |
Name | decagonal antiprism |
Circumradius | sqrt[(3 sqrt(2)-sqrt{5+sqrt(5)})/(8 sqrt(2)-4 sqrt{5+sqrt(5)})] = 1.674505 |
Vertex figure | [33,10] |
General of army | (is itself convex) |
Colonel of regiment | (is itself locally convex) |
Confer |
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Dihedral angles |
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Face vector | 20, 40, 22 |
External links |
Incidence matrix according to Dynkin symbol
s2s10s demi( . . . ) | 20 | 1 1 2 | 1 3 ----------------+----+----------+----- s2s . | 2 | 10 * * | 0 2 s . s2*a | 2 | * 10 * | 0 2 sefa( . s10s ) | 2 | * * 20 | 1 1 ----------------+----+----------+----- . s10s ♦ 10 | 0 0 10 | 2 * sefa( s2s10s ) | 3 | 1 1 1 | * 20
s2s20o demi( . . . ) | 20 | 2 2 | 1 3 ---------------+----+-------+----- s2s . | 2 | 20 * | 0 2 sefa( . s20o ) | 2 | * 20 | 1 1 ---------------+----+-------+----- . s20o ♦ 10 | 0 10 | 2 * sefa( s2s20o ) | 3 | 2 1 | * 20
xo10ox&#x → height = sqrt[(sqrt(2)+sqrt(5+sqrt(5)))/(2 sqrt(2)+sqrt(5+sqrt(5)))] = 0.862397
({10} || dual {10})
o.10o. | 10 * | 2 2 0 | 1 2 1 0
.o10.o | * 10 | 0 2 2 | 0 1 2 1
----------+-------+----------+----------
x. .. | 2 0 | 10 * * | 1 1 0 0
oo10oo&#x | 1 1 | * 20 * | 0 1 1 0
.. .x | 0 2 | * * 10 | 0 0 1 1
----------+-------+----------+----------
x.10o. | 10 0 | 10 0 0 | 1 * * *
xo ..&#x | 2 1 | 1 2 0 | * 10 * *
.. ox&#x | 1 2 | 0 2 1 | * * 10 *
.o10.x | 0 10 | 0 0 10 | * * * 1
snubbed forms: so10ox&#x
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