MathPlotAI Logo MathPlotAI

Vertical Angles by Malin Christersson

Vertical Angles by Malin Christersson
Loading the math board and drawing, please wait…
2014-02-19 02:48
AngleGeometric ConstructionSlider Animation
Move the slider to observe the change between the red and blue angles, understanding the property that vertical angles are equal. This example involves the concept of vertical angles and uses basic geometric elements such as lines, intersections, circles, and angles. Suitable for middle school and above students to learn geometric construction and the properties of vertical angles.

GeoGebra Commands & Parameters

  1. Line(A, B) → a
  2. Line(C, D) → b
  3. Intersect(a, b) → E
  4. Circle(E, 1) → c
  5. Intersect(c, b, 1) → F
  6. Intersect(c, a, 2) → G
  7. Intersect(c, b, 2) → H
  8. Intersect(c, a, 1) → I
  9. Angle(F, E, G) → α
  10. Angle(G, E, H) → β
  11. Angle(H, E, I) → γ