Gyroelongated Square Dipyramid Calculator

Calculator and formulas for a gyroelongated square dipyramid (Johnson solid J17)

The Twisted Elongated Double Pyramid - Johnson Solid J17 in Perfect Symmetry!

Gyroelongated Square Dipyramid Calculator

The Gyroelongated Square Dipyramid

The gyroelongated square dipyramid is a Johnson solid with 16 equilateral triangles (J17).

Enter Known Parameters
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Gyroelongated Square Dipyramid Results
Edge length a:
Volume V:
Surface area S:
Height h:
Gyroelongated Square Dipyramid Properties

The twisted elongated double pyramid: 16 equilateral triangular faces

16 Triangular faces 30 Edges 16 Vertices All edges equal

Dipyramid Structure

Gyroelongated Square Dipyramid

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
Complex √2 formula

Advanced formula with nested radicals. Volume ≈ 1.4284 · a³.

Surface Area Formula
S = 4√3 · a²

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)
\[V = \frac{(\sqrt{2} + \sqrt{4 + 3\sqrt{2}})}{3} \cdot a^3\] \[\approx 1.4284 \cdot a^3\]

Complex formula with nested radicals

Surface Area (S)
\[S = 4\sqrt{3} \cdot a^2 \approx 6.9282 \cdot a^2\]

Area of 16 equilateral triangles

Height (h)
\[h = \left(\sqrt{1 - \frac{1}{2+\sqrt{2}}} + \frac{2}{\sqrt{2}}\right) \cdot a\] \[\approx 2.255 \cdot a\]

Complex height calculation

Edge Length (a)
All 30 edges have equal length a

Uniform edge length property

Gyroelongated Square Dipyramid Parameters
Triangular Faces
16 equilateral triangles
Vertices
16 vertices
Edges
30 edges
Structure
Twisted dipyramid

All properties based on equal edge length a

Calculation Example for a Gyroelongated Square Dipyramid

Given
Edge length a = 10

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
Edge length a = 10.0 Volume V ≈ 1428.4 Surface area S ≈ 692.8
Height h ≈ 22.55 16 Triangle faces 30 Edges
16 Vertices 🔷 Johnson J₁₇ 🔄 Gyroelongated

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.