Perimeter of Composite F-Shape Figures (GeoGebra Dynamic)

Perimeter of Composite F-Shape Figures (GeoGebra Dynamic)
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2014-06-25 14:23
①This example demonstrates a dynamic GeoGebra construction of composite F-shaped figures made of multiple rectangles, with real-time calculation of the outer perimeter.②The core mathematical concept is perimeter calculation for composite shapes, involving decomposition of the boundary into segments and summing their lengths.③Construction highlights: uses Random command to generate vertex coordinates, Intersect for intersection points, Segment to build edges, Distance to measure lengths, and a button (button1) to refresh random shapes; objects include points (A-J), segments (a-t), and auxiliary variables.④Suitable for upper elementary to middle school students learning geometry perimeter, and useful for classroom demonstrations or student exploration of how perimeter varies with different F-shape configurations.

GeoGebra Commands & Parameters

  1. Random(8, 10) → y4
  2. Random(4, 6) → x1
  3. Random(1, 3) → x2
  4. Random(4, 5) → y2
  5. Random(4, 6) → x3
  6. Random(1, 3) → y1
  7. Random(1, 3) → x4
  8. Random(6, 7) → y3
  9. Intersect(xAxis, yAxis) → J
  10. Segment(A, B) → a
  11. Segment(B, C) → b
  12. Segment(C, D) → c
  13. Segment(D, E) → d
  14. Segment(E, F) → e
  15. Segment(F, G) → f
  16. Segment(G, H) → g
  17. Segment(H, I) → h
  18. Segment(I, J) → i
  19. Segment(J, A) → j
  20. Distance(j, a) → k
  21. Distance(b, c) → l
  22. Distance(d, e) → m
  23. Distance(f, g) → n
  24. Distance(h, i) → o
  25. Random(1, 10) → z1
  26. Segment(A, B) → p
  27. Segment(B, C) → q
  28. Segment(C, D) → r
  29. Segment(D, E) → s
  30. Segment(E, F) → t
  31. Segment(F, G) → a_1
  32. Segment(G, H) → b_1
  33. Segment(H, I) → c_1
  34. Segment(I, J) → d_1
  35. Segment(J, A) → e_1

AI Drawing Prompt Reference

Draw a composite F-shaped figure made of several rectangles, with vertices generated at random coordinates on a coordinate plane. The shape is formed by nine vertices connected in sequence to create a closed outline composed of horizontal and vertical segments, resembling the letter F. Measure and label the distances between certain parallel segments inside the figure to compute the outer perimeter. Include a refresh button that regenerates the random shape, dynamically showing how the perimeter changes with different F-configurations. All segments and vertices should be clearly visible, suitable for teaching geometry perimeter concepts.
The prompt above was compiled from the original drawing commands and is for reference only.