Inscribed Polygons Example

Inscribed Polygons Example
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2015-11-19 17:40
This GeoGebra example demonstrates the construction of polygons inscribed in a circle, including triangles, squares, and hexagons, illustrating the geometric relationships between polygons and circles. Key mathematical concepts involve polygon geometry, trigonometry for calculating side lengths and angles, perimeter computation, and geometric construction techniques. The construction utilizes commands such as Circle to draw the circle, Point to create points, Intersect to find intersections, Polygon to draw polygons, and Line and OrthogonalLine for auxiliary lines. Objects like triangleradius, squareradius, hexagonradius, and points A, B, C are employed to control polygon sizes and positions. This example is suitable for high school geometry courses or college preparatory math, aiding students in understanding polygon properties and dynamic geometric construction.

GeoGebra Commands & Parameters

  1. Circle(A, triangleradius) → c
  2. Point(c) → B
  3. Circle(B, A) → d
  4. Intersect(c, d, 1) → C
  5. Intersect(c, d, 2) → D
  6. Circle(D, C) → e
  7. Intersect(c, e, 2) → E
  8. Polygon(C, E, D) → triangle, d_1, c_1, e_1
  9. Circle(F, squareradius) → f
  10. Point(f) → G
  11. Line(G, F) → a
  12. Intersect(f, a, 2) → H
  13. OrthogonalLine(F, a) → b
  14. Intersect(f, b, 1) → I
  15. Intersect(f, b, 2) → J
  16. Polygon(I, H, J, G) → square, i, h, j, g
  17. Circle(K, hexagonradius) → k
  18. Point(k) → L
  19. Circle(L, K) → p
  20. Intersect(k, p, 1) → M
  21. Circle(M, K) → q
  22. Intersect(k, q, 1) → N
  23. Circle(N, K) → r
  24. Intersect(k, r, 1) → O
  25. Circle(O, K) → s
  26. Intersect(k, s, 1) → P
  27. Circle(P, K) → t
  28. Intersect(k, p, 2) → Q
  29. Circle(Q, K) → f_1
  30. Polygon(L, M, N, O, P, Q) → hexagon, l, m, n, o, p_1, q_1