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Reflection Across the Line y=x

Reflection Across the Line y=x
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2017-05-02 05:06
Coordinate GeometryTransformationGeometric Construction
This example demonstrates reflection across the line y=x. Key mathematical concepts include reflection transformation. It uses commands like Polygon, Point, and Mirror in GeoGebra. Suitable for students in middle school and above to learn about reflection in coordinate geometry.

GeoGebra Commands & Parameters

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