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Protractor without Numbers

Protractor without Numbers
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2019-03-19 17:14
AngleFunctionGeometric Construction
This example demonstrates an angle measurement without numbers. It involves angle and geometry concepts, constructed using GeoGebra commands such as Point, Sequence, Polygon, Angle, and Segment. Suitable for middle school and above students to learn angle measurement and geometric construction.

GeoGebra Commands & Parameters

  1. Point(Circle[A, 5]) → B
  2. Sequence(((8 * cos(θ°)), (8 * sin(θ°))), θ, 0, 359) → list1
  3. Polygon(A, B, C, D, E, F, B, A) → poly1, a, b, c, d, e, f, b_1, a_1
  4. Point(list1) → P
  5. Point(list1) → Q
  6. Angle(P, (0, 0), Q) → α
  7. Segment((0, 0), P) → g
  8. Segment((0, 0), Q) → h