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SSA Triangle Demonstration by Bradley Miller

SSA Triangle Demonstration by Bradley Miller
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2017-12-10 09:45
TriangleCircleAngleGeometric ConstructionSlider Animation
This example demonstrates the construction and variation of triangles under SSA (side-angle-side) conditions, involving core concepts such as congruence, similar triangles, upper and lower sum or Riemann sum, derivative, and circumcircle. It constructs points, segments, rotations, angles, lines, circles, and intersections to show the dynamic changes of triangles. Suitable for high school mathematics teaching to understand geometric properties and limit concepts.

GeoGebra Commands & Parameters

  1. Point(Circle[A, ab]) → B
  2. Segment(A, B) → f
  3. Point(Circle[B, bc]) → C
  4. Segment(B, C) → g
  5. Rotate(B, t, C) → B'
  6. Angle(B, C, B') → α
  7. Line(C, B') → h
  8. Circle(B, ab) → c
  9. Intersect(c, h, 1) → D
  10. Intersect(c, h, 2) → E