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Rotational Symmetry of a Cube

Rotational Symmetry of a Cube
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2018-04-25 03:01
Coordinate GeometrySolid GeometryTransformationGeometric Construction
This GeoGebra example dynamically investigates the rotational symmetry of a cube, enabling learners to visualize how a solid undergoes symmetric rotation about a center or axis in three-dimensional space. Key mathematical concepts include solid geometry, rotation transformations, symmetry properties, and spatial coordinate relationships. Construction utilizes GeoGebra commands such as Cube, Rotate, Midpoint, Line, and PointIn, with dynamic manipulation of faces, edges, and vertices to demonstrate symmetry patterns. It is suitable for high school geometry modules, spatial transformation lessons, and independent exploration by students interested in three-dimensional mathematics.

GeoGebra Commands & Parameters

  1. Cube(H, E, xOyPlane) → a, F, faceBCGF, faceCDHG, faceEFGH, edgeAD, edgeAB, edgeBC, edgeCD, edgeAE, edgeDH, edgeEH, G, edgeEF, edgeBF, edgeFG, edgeCG, edgeGH, C, D, A, B, faceABCD, faceADHE, faceABFE
  2. PointIn(faceABCD) → J
  3. PointIn(faceEFGH) → I
  4. Line(I, J) → b
  5. Rotate(a, (-α), b) → a'
  6. Rotate(faceABCD, (-α), b) → faceABCD'
  7. Rotate(faceABFE, (-α), b) → faceABFE'
  8. Rotate(faceADHE, (-α), b) → faceADHE'
  9. Rotate(faceBCGF, (-α), b) → faceBCGF'
  10. Rotate(faceCDHG, (-α), b) → faceCDHG'
  11. Rotate(faceEFGH, (-α), b) → faceEFGH'
  12. Midpoint(D, B) → K
  13. Midpoint(H, F) → L
  14. Midpoint(edgeFG) → Q
  15. Midpoint(edgeGH) → R
  16. Midpoint(edgeEH) → S
  17. Midpoint(edgeEF) → T
  18. Midpoint(edgeBC) → W
  19. Midpoint(edgeAD) → B_1
  20. Midpoint(edgeAB) → C_1
  21. Midpoint(edgeCD) → D_1