Acronym tistadip Name triangle - pentagram duoprism,pentagram - stip wedge ` ©` Circumradius sqrt[(25-3 sqrt(5))/30] = 0.780850 Dihedral angles at {4} between trip and stip:   90° at {5/2} between stip and stip:   60° at {3} between trip and trip:   36° Confer general duoprisms: n/d,m/b-dip   general polytopal classes: segmentochora   bistratic lace towers Externallinks

As abstract polytope tistadip is isomorphic to trapedip, thereby replacing pentagrams by pentagons, resp. stip by pip.

Incidence matrix according to Dynkin symbol

```x3o x5/2o

. . .   . | 15 |  2  2 | 1  4 1 | 2 2
----------+----+-------+--------+----
x . .   . |  2 | 15  * | 1  2 0 | 2 1
. . x   . |  2 |  * 15 | 0  2 1 | 1 2
----------+----+-------+--------+----
x3o .   . |  3 |  3  0 | 5  * * | 2 0
x . x   . |  4 |  2  2 | * 15 * | 1 1
. . x5/2o |  5 |  0  5 | *  * 3 | 0 2
----------+----+-------+--------+----
x3o x   . ♦  6 |  6  3 | 2  3 0 | 5 *
x . x5/2o ♦ 10 |  5 10 | 0  5 2 | * 3
```

```x3o x5/3o

. . .   . | 15 |  2  2 | 1  4 1 | 2 2
----------+----+-------+--------+----
x . .   . |  2 | 15  * | 1  2 0 | 2 1
. . x   . |  2 |  * 15 | 0  2 1 | 1 2
----------+----+-------+--------+----
x3o .   . |  3 |  3  0 | 5  * * | 2 0
x . x   . |  4 |  2  2 | * 15 * | 1 1
. . x5/3o |  5 |  0  5 | *  * 3 | 0 2
----------+----+-------+--------+----
x3o x   . ♦  6 |  6  3 | 2  3 0 | 5 *
x . x5/3o ♦ 10 |  5 10 | 0  5 2 | * 3
```

```x3/2o x5/2o

.   . .   . | 15 |  2  2 | 1  4 1 | 2 2
------------+----+-------+--------+----
x   . .   . |  2 | 15  * | 1  2 0 | 2 1
.   . x   . |  2 |  * 15 | 0  2 1 | 1 2
------------+----+-------+--------+----
x3/2o .   . |  3 |  3  0 | 5  * * | 2 0
x   . x   . |  4 |  2  2 | * 15 * | 1 1
.   . x5/2o |  5 |  0  5 | *  * 3 | 0 2
------------+----+-------+--------+----
x3/2o x   . ♦  6 |  6  3 | 2  3 0 | 5 *
x   . x5/2o ♦ 10 |  5 10 | 0  5 2 | * 3
```

```x3/2o x5/3o

.   . .   . | 15 |  2  2 | 1  4 1 | 2 2
------------+----+-------+--------+----
x   . .   . |  2 | 15  * | 1  2 0 | 2 1
.   . x   . |  2 |  * 15 | 0  2 1 | 1 2
------------+----+-------+--------+----
x3/2o .   . |  3 |  3  0 | 5  * * | 2 0
x   . x   . |  4 |  2  2 | * 15 * | 1 1
.   . x5/3o |  5 |  0  5 | *  * 3 | 0 2
------------+----+-------+--------+----
x3/2o x   . ♦  6 |  6  3 | 2  3 0 | 5 *
x   . x5/3o ♦ 10 |  5 10 | 0  5 2 | * 3
```

```ox xx5/2oo&#x    → height = sqrt(3)/2 = 0.866025
({5/2} || stip)

o. o.5/2o.    | 5  * | 2  2 0  0 | 1 1  4 0 0 | 2 2 0
.o .o5/2.o    | * 10 | 0  1 1  2 | 0 1  2 2 1 | 2 1 1
--------------+------+-----------+------------+------
.. x.   ..    | 2  0 | 5  * *  * | 1 0  2 0 0 | 1 2 0
oo oo5/2oo&#x | 1  1 | * 10 *  * | 0 1  2 0 0 | 2 1 0
.x ..   ..    | 0  2 | *  * 5  * | 0 1  0 2 0 | 2 0 1
.. .x   ..    | 0  2 | *  * * 10 | 0 0  1 1 1 | 1 1 1
--------------+------+-----------+------------+------
.. x.5/2o.    | 5  0 | 5  0 0  0 | 1 *  * * * | 0 2 0
ox ..   ..&#x | 1  2 | 0  2 1  0 | * 5  * * * | 2 0 0
.. xx   ..&#x | 2  2 | 1  2 0  1 | * * 10 * * | 1 1 0
.x .x   ..    | 0  4 | 0  0 2  2 | * *  * 5 * | 1 0 1
.. .x5/2.o    | 0  5 | 0  0 0  5 | * *  * * 2 | 0 1 1
--------------+------+-----------+------------+------
ox xx   ..&#x ♦ 2  4 | 1  4 2  2 | 0 2  2 1 0 | 5 * *
.. xx5/2oo&#x ♦ 5  5 | 5  5 0  5 | 1 0  5 0 1 | * 2 *
.x .x5/2.o    ♦ 0 10 | 0  0 5 10 | 0 0  0 5 2 | * * 1
```