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Explore Dilations, Perimeter, and Area

Explore Dilations, Perimeter, and Area
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2020-01-26 23:57
PolygonTransformationGeometric Construction
This example demonstrates how dilations affect the perimeter and area of polygons. Key math concepts include dilation, perimeter, area, and scale factor. It uses GeoGebra commands like Polygon, Dilate, Perimeter, and PointIn. Suitable for middle school and above students to understand the properties of geometric transformations.

GeoGebra Commands & Parameters

  1. Polygon(A, B, C, D) → q1, a, b, c, d
  2. Dilate(A, 2, E) → A'
  3. Dilate(B, 2, E) → B'
  4. Dilate(C, 2, E) → C'
  5. Dilate(D, 2, E) → D'
  6. Polygon(A', B', C', D') → q1', a', b', c', d'
  7. Perimeter(q1) → perimeterq1
  8. PointIn(q1) → Pointq1_1
  9. Perimeter(q1') → perimeterq1'
  10. PointIn(q1') → Pointq1'_1
  11. PointIn(q1') → Pointq1'
  12. PointIn(q1) → Pointq1