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90 Degree Rotation

90 Degree Rotation
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2016-03-04 06:20
Coordinate GeometryTransformationGeometric Construction
In collections Rotations- Lesson Plan
This example demonstrates the change in position of a point when rotated 90 degrees around the origin in a coordinate system. Core mathematical concepts include coordinate transformation, rotation matrix, and geometric transformation. Construction highlights involve using commands like Polygon, Point, and Rotate, with objects such as A, B, C, poly1, c, a, b, D, A', B', C', poly1', c', a', b', text1, text2. Suitable for middle school and above students learning geometric transformations and coordinate geometry.

GeoGebra Commands & Parameters

  1. Polygon(A, B, C) → poly1, c, a, b
  2. Point(yAxis) → D
  3. Rotate(A, 90°, D) → A'
  4. Rotate(B, 90°, D) → B'
  5. Rotate(C, 90°, D) → C'
  6. Polygon(A', B', C') → poly1', c', a', b'