GeoGebra
  • Create Class
GeoGebra
  • Home
  • News Feed
  • Resources
  • Profile
  • People
  • Classroom
  • App Downloads
About GeoGebra
Contact us: office@geogebra.org
Terms of Service – Privacy – License
Language: English

© 2021 GeoGebra

GoGeometry Action 128!

Author:
Tim Brzezinski
Creation of this applet was inspired by a problem posted by Antonio Gutierrez (GoGeometry). You can move any of the LARGE POINTS anywhere you'd like at ANY TIME. How can we prove the two pink angles (soon to appear) ALWAYS remain CONGRUENT?

Quick (Silent) Demo

New Resources

  • Three integers relations
  • Translating math to English
  • Trig Graph Transformation 4
  • Completing the Square
  • Points of concurrency of the lines defined by triangle centers and vertices

Discover Resources

  • Calc
  • Not SSA
  • The Walk-a-thon
  • ISMAIL ANDISTA AZHAR_15321825_UMPO
  • Octagonal Prism

Discover Topics

  • Sine
  • Binomial Distribution
  • Cosine
  • Circumcircle or Circumscribed Circle
  • Correlation

GeoGebra

  • About
  • Partners
  • Testing
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Language: English
  • Terms of Service Privacy License
  • Facebook Twitter YouTube