(box: x-ray)  (F: faces)  (slider: perspective)  (image: L=rotate R=zoom)  (M: metrics)
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Pentagonal Bifrustum
Vertices:  15  (10[3] + 5[4])
Faces:12  (2 regular pentagons + 10 isosceles trapezoids)
Edges:25  (10 short + 10 medium + 5 long)
Symmetry:  5-fold Prismatic  (D5h)
Dual Solid:  Elongated Pentagonal Dipyramid
(values below based on edge-scribed radius = 1)
Short Edge (10):  2*sqrt(125+38*sqrt(5))/41    ≈0.70684691379107786673
Medium Edge (10):  4*sqrt(2*(305−109*sqrt(5)))/41    ≈1.0799659849008998193
Long Edge (5):  2*sqrt(5−2*sqrt(5))    ≈1.4530850560107217718
Edge-scribed Radius:  1
Volume:20*(33361*sqrt(5)−36905)/206763    ≈3.6459582998283526610