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Reflections by Neleigh Johnson

Reflections by Neleigh Johnson
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2018-01-18 04:59
Coordinate GeometryTransformationGeometric Construction
This example demonstrates the concept of reflections. Using the Mirror command in GeoGebra, the reflection of points, line segments, and polygons across a mirror line can be observed. The construction involves commands such as Polygon, Line, Mirror, Distance, and Segment. Suitable for students at the middle school level and above to learn about geometric transformations.

GeoGebra Commands & Parameters

  1. Polygon(A, B, C, D, E) → poly1, a, b, c, d, e
  2. Line(F, G) → f
  3. Mirror(A, f) → A'
  4. Mirror(B, f) → B'
  5. Mirror(C, f) → C'
  6. Mirror(D, f) → D'
  7. Mirror(E, f) → E'
  8. Polygon(A', B', C', D', E') → poly1', a', b', c', d', e'
  9. Distance(A, F) → distanceAF
  10. Distance(A, f) → distanceAf
  11. Distance(E, f) → distanceEf
  12. Distance(D, f) → distanceDf
  13. Distance(C, f) → distanceCf
  14. Distance(B, f) → distanceBf
  15. Distance(A', f) → distanceA'f
  16. Distance(B', f) → distanceB'f
  17. Distance(C', f) → distanceC'f
  18. Distance(D', f) → distanceD'f
  19. Distance(E', f) → distanceE'f
  20. Segment(A', A) → h