Circle-Based Multiplication Demo

Circle-Based Multiplication Demo
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2020-05-17 22:53
This example demonstrates multiplication of two numbers using circle constructions. It involves core math concepts like circles, area calculations, and geometric constructions. GeoGebra commands and objects such as Point, Circle, Segment, Intersect, Polygon, and Area are used in the construction. Suitable for middle school students and above to learn and understand the relationship between multiplication and geometric shapes, as well as for mathematical teaching demonstrations.

GeoGebra Commands & Parameters

  1. Point(xAxis) → A
  2. Point(xAxis) → B
  3. Circle((A + B) / 2, B) → c
  4. Segment((0, 0), Intersect[c, yAxis]) → f
  5. Point(xAxis) → C
  6. Intersect(c, f, 1) → D
  7. Polygon(C, D, 4) → poly1, g, h, i, j, E, F
  8. Area(poly1) → a