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Area of Plane Figures - Triangle

Area of Plane Figures - Triangle
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2016-11-20 05:39
TriangleCoordinate GeometryGeometric Construction
This example demonstrates how to calculate the area of a triangle. Key mathematical concepts include the properties of triangles and the area formula. Using GeoGebra commands such as Polygon, Line, and Segment, dynamic construction and exploration of triangles are possible. Suitable for middle school and above students to learn geometric construction and area calculation.

GeoGebra Commands & Parameters

  1. Intersect(xAxis, yAxis) → O
  2. Point(xAxis) → P
  3. Ray(O, P) → f
  4. Point(xAxis) → Q
  5. Ray(O, Q) → g
  6. Point(yAxis) → R
  7. Ray(O, R) → h
  8. Point(f) → A
  9. Point(g) → B
  10. Point(h) → C
  11. Polygon(A, B, C) → Tr, b, a, c
  12. Line(C, xAxis) → i
  13. Line(A, yAxis) → j
  14. Line(B, yAxis) → k
  15. Intersect(i, j) → D
  16. Polygon(A, D, C) → Polígon2, c_4, a_1, d
  17. Intersect(i, k) → E
  18. Polygon(C, E, B) → Polígon3, b_1, c_1, e_1
  19. Segment(C, O) → a_3
  20. Polygon(C, O, B) → Polígon4, b_2, c_2, o
  21. Polygon(C, O, A) → Polígon5, a_2, c_3, o_1
  22. Midpoint(a_3) → F
  23. Midpoint(b) → G
  24. Midpoint(c_4) → H