Acronym 3,n-dip, K-4.175 Name triangle - n-gon duoprism,n-gon - n-prismatic wedge ` ©` Circumradius sqrt[1/3+1/(4 sin2(π/n))] General of army (is itself convex) Colonel of regiment (is itself locally convex) Especially triddip (n=3)   tisdip (n=4)   trapedip (n=5)   thiddip (n=6)   todip (n=8)   tradedip (n=10)   titwadip (n=12) Confer general duoprisms: n,m-dip   2n,m-dip Externallinks

Incidence matrix according to Dynkin symbol

```x3o xno   (n>2)

. . . . | 3n |  2  2 | 1  4 1 | 2 2
--------+----+-------+--------+----
x . . . |  2 | 3n  * | 1  2 0 | 2 1
. . x . |  2 |  * 3n | 0  2 1 | 1 2
--------+----+-------+--------+----
x3o . . |  3 |  3  0 | n  * * | 2 0
x . x . |  4 |  2  2 | * 3n * | 1 1
. . xno |  n |  0  n | *  * 3 | 0 2
--------+----+-------+--------+----
x3o x . ♦  6 |  6  3 | 2  3 0 | n *
x . xno ♦ 2n |  n 2n | 0  n 2 | * 3
```

```ox xxnoo&#x   (n>2)   → height = sqrt(3)/2 = 0.866025
({n} || {n}-p)

o. o.no.    | n  * | 2  2 0  0 | 1  4 1 0 0 | 2 2 0
.o .on.o    | * 2n | 0  1 1  2 | 0  2 1 2 1 | 1 2 1
------------+------+-----------+------------+------
.. x. ..    | 2  0 | n  * *  * | 1  2 0 0 0 | 2 1 0
oo oonoo&#x | 1  1 | * 2n *  * | 0  2 1 0 0 | 1 2 0
.x .. ..    | 0  2 | *  * n  * | 0  0 1 2 0 | 0 2 1
.. .x ..    | 0  2 | *  * * 2n | 0  1 0 1 1 | 1 1 1
------------+------+-----------+------------+------
.. x.no.    | n  0 | n  0 0  0 | 1  * * * * | 2 0 0
.. xx ..&#x | 2  2 | 1  2 0  1 | * 2n * * * | 1 1 0
ox .. ..&#x | 1  2 | 0  2 1  0 | *  * n * * | 0 2 0
.x .x ..    | 0  4 | 0  0 2  2 | *  * * n * | 0 1 1
.. .xn.o    | 0  n | 0  0 0  n | *  * * * 2 | 1 0 1
------------+------+-----------+------------+------
.. xxnoo&#x ♦ n  n | n  n 0  n | 1  n 0 0 1 | 2 * *
ox xx ..&#x ♦ 2  4 | 1  4 2  2 | 0  2 2 1 0 | * n *
.x .xn.o    ♦ 0 2n | 0  0 n 2n | 0  0 0 n 2 | * * 1
```