Symmetric Canonical Self-Dual Enneahedra

11 total:  5 

4 have C2 symmetry:  2 

3 have 7 edge lengths:  1 

(box: x-ray)  (F: faces)  (slider: perspective)  (image: L=rotate R=zoom)  (M: metrics)

Self-Dual Enneahedron #5 (canonical)