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

© 2022 GeoGebra

GoGeometry Action 191!

Author:
Tim Brzezinski
Topic:
Geometry, Parallelogram, Square
Creation of this resource was inspired by this problem from Antonio Gutierrez. How can we formally prove what is dynamically illustrated here?

LARGE POINTS are moveable.

New Resources

  • Open Middle: Perimeter of a Rectangle
  • Quick Distance Conversions
  • Domain and Range
  • Factors of Positive Integers
  • Organic Ellipse

Discover Resources

  • CircleCreation-MASTER-36887
  • Inscribed Angles Sharing Intercepted Arc
  • Pooh
  • SSS Triangle Making (Inequality)
  • If Our Class Were the World: IM 6.9.2

Discover Topics

  • Conic Sections
  • Arithmetic Mean
  • Integers
  • Real Numbers
  • Trigonometry

GeoGebra

  • About
  • Partners
  • GeoGebra on Tests
  • News Feed
  • App Downloads

Apps

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

Resources

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