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(a,b) is an Open Interval

(a,b) is an Open Interval
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2016-03-24 12:05
Coordinate GeometryGeometric Construction
In collections Graphs and Mapping Diagrams
This example illustrates the concept of an open interval (a,b), which does not include the endpoints a and b. Using GeoGebra commands such as Point and Segment, the example visually demonstrates the characteristics of an open interval. Suitable for students at the middle school level and above to learn about interval concepts.

GeoGebra Commands & Parameters

  1. Point(xAxis) → B
  2. Point(xAxis) → A_1
  3. Segment(A_1, B) → a_1
  4. Point(a_1) → a
  5. Segment((x(a) - ε, 0), (x(a) + ε, 0)) → b