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Reflection over y-axis

Reflection over y-axis
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2017-05-01 03:49
Coordinate GeometryTransformationGeometric Construction
This example demonstrates how to reflect a shape over the y-axis. Key mathematical concepts include reflection transformation. It uses Polygon, Point, Line, Mirror, etc., GeoGebra commands. Suitable for middle school and above students learning geometric transformations.

GeoGebra Commands & Parameters

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