Gyroelongated Square Dipyramid Calculator
Calculator and formulas for a gyroelongated square dipyramid (Johnson solid J17)
Gyroelongated Square Dipyramid Calculator
The Gyroelongated Square Dipyramid
The gyroelongated square dipyramid is a Johnson solid with 16 equilateral triangles (J17).
Gyroelongated Square Dipyramid Properties
The twisted elongated double pyramid: 16 equilateral triangular faces
Dipyramid Structure
                            
                                    
                                    The twisted elongated double pyramid.
                                    
                                    16 equilateral triangular faces.
                                
What is a Gyroelongated Square Dipyramid?
A gyroelongated square dipyramid is a fascinating Johnson solid:
- Definition: Johnson solid J17
 - Faces: 16 equilateral triangles
 - All edges: Same length
 
- Vertices: 16 vertices total
 - Edges: 30 edges
 - Shape: Twisted elongated double pyramid
 
Geometric Properties of the Gyroelongated Square Dipyramid
The gyroelongated square dipyramid shows remarkable geometric properties:
Basic Parameters
- Triangular faces: 16 equilateral triangles
 - Structure: Dipyramid with twisted elongation
 - Euler characteristic: V - E + F = 16 - 30 + 16 = 2
 - Edge uniformity: All edges equal length
 
Special Properties
- Johnson solid: One of the 92 Johnson solids
 - Convex polyhedron: All faces convex
 - Dipyramidal structure: Two pyramids joined
 - Gyroelongated: Twisted middle section
 
Mathematical Relationships
The gyroelongated square dipyramid follows complex mathematical laws:
Volume Formula
Advanced formula with nested radicals. Volume ≈ 1.4284 · a³.
Surface Area Formula
Simple formula: 16 triangles. Surface ≈ 6.9282 · a².
Applications of the Gyroelongated Square Dipyramid
Gyroelongated square dipyramids find applications in various fields:
Architecture & Engineering
- Complex structural elements
 - Space frame constructions
 - Geodesic dome components
 - Architectural sculptures
 
Science & Technology
- Complex crystal structures
 - Molecular cage compounds
 - Nanostructure modeling
 - Advanced material designs
 
Education & Teaching
- Advanced geometry courses
 - Topology demonstrations
 - 3D modeling studies
 - Mathematical research
 
Art & Design
- Complex sculptural forms
 - Modern art installations
 - Geometric jewelry design
 - 3D printed objects
 
Gyroelongated Square Dipyramid Formulas
Volume (V)
Complex formula with nested radicals
Surface Area (S)
Area of 16 equilateral triangles
Height (h)
Complex height calculation
Edge Length (a)
Uniform edge length property
Gyroelongated Square Dipyramid Parameters
16 equilateral triangles
16 vertices
30 edges
Twisted dipyramid
All properties based on equal edge length a
Calculation Example for a Gyroelongated Square Dipyramid
Given
Find: All properties of the gyroelongated square dipyramid
1. Volume Calculation
For a=10:
\[V = \frac{(\sqrt{2} + \sqrt{4 + 3\sqrt{2}})}{3} \cdot 1000\] \[V ≈ 1.4284 \cdot 1000\] \[V ≈ 1428.4\]The volume is approximately 1428.4 cubic units
2. Surface Area Calculation
For a=10:
\[S = 4\sqrt{3} \cdot 100\] \[S ≈ 4 \cdot 1.732 \cdot 100\] \[S ≈ 692.8\]The surface area is approximately 692.8 square units
3. Complete Gyroelongated Square Dipyramid
The gyroelongated square dipyramid with complex twisted structure
The Gyroelongated Square Dipyramid: Complex Twisted Beauty
The gyroelongated square dipyramid represents one of the most complex and fascinating Johnson solids. As J17, it demonstrates the intricate beauty that emerges when dipyramidal structures are enhanced with gyroelongation - a twisted middle section that creates extraordinary geometric complexity. The mathematical formulas governing this polyhedron involve nested radicals and complex trigonometric relationships, making it a challenging yet rewarding subject for advanced geometric study.
The Architecture of Complexity
The gyroelongated square dipyramid showcases advanced geometric principles:
- Triangular uniformity: All 16 faces are equilateral triangles
 - Edge equality: All 30 edges have identical length
 - Dipyramidal structure: Two pyramids connected by twisted middle
 - Gyroelongation: Twisted elongation creating complex symmetry
 - Johnson classification: One of the 92 convex Johnson solids
 - Mathematical complexity: Nested radical formulas
 - Structural integrity: Exceptional stability from triangulation
 
Mathematical Sophistication
Advanced Formula Structure
The volume formula involves nested square roots and complex coefficients, representing some of the most sophisticated relationships in Johnson solid mathematics.
Geometric Complexity
The gyroelongated structure creates multiple levels of symmetry, with both rotational and reflective elements that challenge traditional geometric analysis.
Structural Engineering
The twisted dipyramidal design provides exceptional strength-to-weight ratios, making it valuable for advanced engineering applications.
Research Applications
This complex polyhedron serves as a model for advanced material science, nanotechnology, and crystallographic research.
Summary
The gyroelongated square dipyramid stands as a monument to geometric sophistication, combining the elegance of dipyramidal symmetry with the complexity of gyroelongation. As Johnson solid J17, it challenges our understanding of three-dimensional space while providing practical applications in advanced engineering and scientific research. From its intricate nested radical formulas to its remarkable structural properties, this polyhedron represents the pinnacle of mathematical beauty merged with functional design. Whether studied by mathematicians exploring complex geometric relationships or utilized by engineers designing advanced structures, the gyroelongated square dipyramid continues to inspire and challenge our perception of geometric possibility. Its role in crystallography, nanotechnology, and architectural design demonstrates how pure mathematical concepts can translate into real-world innovations.
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