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Cuboid Volume Calculation by Kevin Lee

Cuboid Volume Calculation by Kevin Lee
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2019-08-13 13:22
Solid GeometryGeometric Construction
This example demonstrates how to dynamically calculate the volume of a cuboid through geometric constructions. Key math concepts include volume formulas, 3D geometry, and linear programming. It uses commands like Vector, Line, Intersect, Segment, Polygon, and Midpoint in GeoGebra to build the cuboid model and compute its dimensions. Suitable for high school and above students learning 3D geometry and optimization problems.

GeoGebra Commands & Parameters

  1. Vector(((0.75 * width), (0.5 * width))) → w
  2. Vector((0, height)) → z
  3. Vector(((-0.75 * length), (0.4 * length))) → u
  4. Line(C, z) → d
  5. Line(B, w) → e
  6. Line(B, u) → f
  7. Line(A, z) → g
  8. Intersect(f, g) → D
  9. Intersect(d, e) → E
  10. Segment(A, D) → h
  11. Segment(D, B) → i
  12. Segment(B, E) → j
  13. Segment(E, C) → k
  14. Line(D, j) → l
  15. Line(E, i) → m
  16. Intersect(l, m) → F
  17. Segment(D, F) → n
  18. Segment(F, E) → p
  19. Polygon(D, A, O, B) → poly1, d_1, a_1, o, b_1
  20. Polygon(D, F, E, B) → poly2, d_2, f_1, e_1, b_2
  21. Polygon(O, C, E, B) → poly3, o_1, c_1, e_2, b_3
  22. Midpoint(o_1) → G
  23. Midpoint(c_1) → H
  24. Midpoint(a_1) → I