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Congruence Transformation - Reflection

Congruence Transformation - Reflection
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2016-10-31 20:49
Coordinate GeometryTransformationGeometric Construction
This example demonstrates the congruence transformation, specifically reflection. Key mathematical concepts include congruence and reflection. Using GeoGebra commands such as Polygon, Point, Line, Rotate, etc., the reflection transformation can be constructed. Suitable for middle school and above students to learn geometric transformations.

GeoGebra Commands & Parameters

  1. Polygon(A, B, C) → poly1, c, a, b
  2. Polygon(D, E, F) → poly2, f, d, e
  3. Point(yAxis) → G
  4. Point(yAxis) → H
  5. Line(G, H) → g
  6. Rotate(A, (-α), g) → A'
  7. Rotate(B, (-α), g) → B'
  8. Rotate(C, (-α), g) → C'
  9. Polygon(A', B', C') → poly1', c', a', b'