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Rectangle Perimeter Example

Rectangle Perimeter Example
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2020-08-04 13:51
Coordinate GeometryGeometric Construction
This example demonstrates how to dynamically calculate the perimeter of a rectangle using GeoGebra. Core math concepts include perimeter formula, rectangle properties, and coordinate geometry. Construction highlights involve commands/objects like Random, Textfield, Intersect, Point, Segment, Polygon for creating random rectangles and computing perimeter. Suitable for middle school and above students learning geometric calculations and GeoGebra operations.

GeoGebra Commands & Parameters

  1. Random(2, 20) → a
  2. Random(1, 20) → b
  3. Textfield(c) → InputBox1
  4. Random(-5, 5) → f
  5. Intersect(xAxis, yAxis) → A
  6. Point(Circle[A, a]) → B
  7. Segment(A, B) → h
  8. Segment(D, A) → i
  9. Segment(D, C) → j
  10. Segment(C, B) → k
  11. Polygon(D, A, B, C) → q1, d_1, a_1, b_1, c_1

AI Drawing Prompt Reference

Draw a rectangle with a random length between 2 and 20, and a width between 1 and 20. Use coordinate geometry to construct the four vertices of the rectangle D, A, B, and C starting from point A(-5,0), through the intersection of circle A(a) with the x-axis at point B, and point D(0,f) on the y-axis. Calculate and display the perimeter of the rectangle.
The prompt above was compiled from the original drawing commands and is for reference only.