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Reflection Across the y-axis by Nicola Trubridge

Reflection Across the y-axis by Nicola Trubridge
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2019-11-16 07:45
Coordinate GeometryTransformationGeometric Construction
This example demonstrates reflection across the y-axis. Key mathematical concepts include reflection transformations. Using commands like Point, Line, Polygon, and Mirror, the reflected figure can be constructed. Suitable for middle school and above students learning geometric transformations.

GeoGebra Commands & Parameters

  1. Point(xAxis) → A
  2. Point(xAxis) → B
  3. Line(A, B) → a
  4. Polygon(C, D, E) → poly1, e, c, d
  5. Mirror(C, a) → C'
  6. Mirror(D, a) → D'
  7. Mirror(E, a) → E'
  8. Polygon(C', D', E') → poly1', e', c', d'