Mandy Wu's Geometric Constructions

Mandy Wu's Geometric Constructions
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2015-11-19 08:32
This example demonstrates geometric constructions using GeoGebra, focusing on circumcircle (circumscribed circle), correlation, right triangles, and pyramid constructions. Key math concepts include coordinate geometry and solid geometry. Construction highlights the use of commands and objects like Polygon, Midpoint, Line, Intersect, and OrthogonalLine. Suitable for high school and above students to understand geometric constructions and spatial geometric relationships.

GeoGebra Commands & Parameters

  1. Polygon(A, B, C) → poly1, c, a, b
  2. Midpoint(B, A) → D
  3. Midpoint(A, C) → E
  4. Midpoint(C, B) → F
  5. Line(D, C) → d
  6. Line(E, B) → e
  7. Line(F, A) → f
  8. Intersect(d, e) → G
  9. Polygon(H, I, J) → poly2, j, h, i
  10. OrthogonalLine(H, h) → g
  11. OrthogonalLine(J, j) → k
  12. OrthogonalLine(I, i) → l
  13. Intersect(g, k) → K