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Lamppost Similar Triangles Problem

Lamppost Similar Triangles Problem
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2020-04-23 00:42
TriangleVectorGeometric Construction
In collections Geometry - Mini Similarity Book
This example uses similar triangles to calculate shadow lengths. It demonstrates the properties of similar triangles and involves concepts of ratios and proportions. It uses commands like Line, Intersect, Segment, Vector, Textfield, Midpoint in GeoGebra. Suitable for students at middle school level and above to learn the application of similar triangles.

GeoGebra Commands & Parameters

  1. Line(B, D) → b
  2. Intersect(b, xAxis) → E
  3. Segment(D, C) → c
  4. Vector(B, D) → u
  5. Vector(C, E) → v
  6. Textfield(inputAnswer) → inputBox1
  7. Segment(E, D) → d
  8. Segment(C, D) → e
  9. Segment(B, A) → f
  10. Segment(A, E) → g
  11. Midpoint(A, C) → F
  12. Midpoint(C, E) → G