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Reflection Across the y-axis

Reflection Across the y-axis
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2019-11-17 22:48
AngleCoordinate GeometryTransformation
This example demonstrates reflection across the y-axis. Key mathematical concepts include reflection transformation and angles. Using commands like Point, Line, Polygon, and Mirror, the reflected figure can be constructed. Suitable for middle school and above students to learn 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'