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Rectangle Area and Perimeter -- Fixed Area

Rectangle Area and Perimeter -- Fixed Area
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2017-12-11 15:23
Coordinate GeometryGeometric Construction
In collections Mathematics Form 1
This example demonstrates how the shape of a rectangle changes with a fixed area. Key math concepts include area, perimeter, and rectangle properties. It is constructed using GeoGebra commands like Line, Point, Distance, If, DynamicCoordinates. Suitable for middle school and above students studying geometric transformations and optimization problems.

GeoGebra Commands & Parameters

  1. SelectedIndex(Bahasa) → nn
  2. Line(A, xAxis) → a
  3. Point(a) → G
  4. Distance(A, G) → DPj
  5. If(f ≟ true, round(DPj), DPj) → RAB
  6. DynamicCoordinates(G, x(H), y(H)) → B
  7. Distance(A, B) → Pj
  8. If(nn ≟ 1, If[Tinggi ≟ 1, " unit", " units"], " unit") → textUT
  9. Textfield(Ls) → InputBox1
  10. Circle(A, Tinggi) → c
  11. OrthogonalLine(A, a) → b
  12. Intersect(c, b, 2) → C
  13. Line(C, a) → d
  14. Line(B, b) → e
  15. Intersect(d, e) → D
  16. Polygon(A, B, D, C) → poly1, a_1, b_1, d_1, c_1
  17. Perimeter(poly1) → Pr
  18. Midpoint(A, B) → E
  19. VerticalText(Text[Tinggi] + textUT) → VText
  20. Midpoint(A, C) → F
  21. If(nn ≟ 1, If[Pj ≟ 1, " unit", " units"], " unit") → textUP
  22. If(nn ≟ 1, "Perimeter = " + (Text[Pr]) + " units", "Perimeter = " + (Text[Pr]) + " unit") → text1