Acronym | ditra |
Name | ditriangular trapezoprism |
© | |
Circumradius | sqrt[(a+b)2+c2]/2 |
Coordinates |
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Face vector | 12, 18, 8 |
Confer | |
External links |
The variant with (a,b,c) = (x,x+h,q) occurs as the mere base-edge alternated faceting s2s6x obtained from the twip.
Incidence matrix according to Dynkin symbol
ab3ba&#c → height = sqrt[c2-(b-a)2/3] a < b c > (b-a)/sqrt(3) o.3o. | 6 * | 1 1 1 0 0 | 1 1 1 0 .o3.o | * 6 | 0 0 1 1 1 | 0 1 1 1 ---------+-----+-----------+-------- a. .. | 2 0 | 3 * * * * | 1 1 0 0 .. b. | 2 0 | * 3 * * * | 1 0 1 0 oo3oo&#c | 1 1 | * * 6 * * | 0 1 1 0 .b .. | 0 2 | * * * 3 * | 0 1 0 1 .. .a | 0 2 | * * * * 3 | 0 0 1 1 ---------+-----+-----------+-------- a.3b. | 6 0 | 3 3 0 0 0 | 1 * * * ditriangle ab ..&#c | 2 2 | 1 0 2 1 0 | * 3 * * trapezium .. ba&#c | 2 2 | 0 1 2 0 1 | * * 3 * trapezium .b3.a | 0 6 | 0 0 0 3 3 | * * * 1 ditriangle
or o.3o. & | 12 | 1 1 1 | 1 2 -----------+----+-------+---- a. .. & | 2 | 6 * * | 1 1 .. b. & | 2 | * 6 * | 1 1 oo3oo&#c | 2 | * * 6 | 0 2 -----------+----+-------+---- a.3b. & | 6 | 3 3 0 | 2 * ditriangle ab ..&#c | 6 | 1 1 2 | * 6 trapezium
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