MathPlotAI Logo MathPlotAI

Interior Angles of Polygons by Ooi Soo Huat

Interior Angles of Polygons by Ooi Soo Huat
Loading the math board and drawing, please wait…
2017-12-22 21:39
PolygonAngleGeometric ConstructionSlider Animation
In collections Mathematics Form 2
This example demonstrates the calculation and visualization of interior angles in polygons. It involves core math concepts like polygons, angle sums, and angle measurement. GeoGebra commands used include Sequence, Polygon, and Angle for construction. Suitable for middle school and above students to explore polygon angle properties, ideal for classroom demonstrations and geometric investigations.

GeoGebra Commands & Parameters

  1. Sequence(LPoint(p), p, 1, n) → SPoint
  2. Polygon(SPoint) → SPoly
  3. PointIn(SPoly) → M
  4. Sequence(Segment[M, SPoint(p)], p, 1, n) → Garis
  5. Append(Sequence[Polygon[LPoint(p), LPoint(p + 1), M], p, 1, n - 1], Polygon[LPoint(n), A, M]) → SSegitiga
  6. Angle(SSegitiga(1)) → SS1_1, SS1_2, SS1_3
  7. Angle(SSegitiga(2)) → SS2_1, SS2_2, SS2_3
  8. Angle(SSegitiga(3)) → SS3_1, SS3_2, SS3_3
  9. Angle(SSegitiga(4)) → SS4_1, SS4_2, SS4_3
  10. Angle(SSegitiga(5)) → SS5_1, SS5_2, SS5_3
  11. Angle(SSegitiga(6)) → SS6_1, SS6_2, SS6_3
  12. Angle(SSegitiga(7)) → SS7_1, SS7_2, SS7_3
  13. Angle(SSegitiga(8)) → SS8_1, SS8_2, SS8_3
  14. Angle(SPoly) → SP_1, SP_2, SP_3, SP_4, SP_5, SP_6, SP_7, SP_8
  15. SelectedIndex(Bahasa) → nn
  16. If(nn ≟ 1, "What is the sum of angles in all triangles?", "Apakah hasil tambah sudu-sudut dalam semua segi tiga?") → Tex1
  17. If(nn ≟ 1, "What is the sum of angles at point M?", "Apakah hasil tambah sudut-sudut pada titik M?") → Tex2
  18. If(nn ≟ 1, "What is the sum of angles in the polygon?", "Apakah hasil tambah sudut-sudut dalam poligon?") → Tex3