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

© 2023 GeoGebra

Investigation of the sum of angles in a quadrilateral

Author:
Jan Manders
Topic:
Angles, Quadrilaterals
Points A, B, C, D can be moved. First move slider a tot 180, then slider b to 180. Any idea?

New Resources

  • Midpoints
  • Vertical Pairs and Linear Pairs
  • Transforming Square Root Function Graphs: Discovery Lesson
  • Quick Surface of Revolution Creator
  • Tetrahedrons

Discover Resources

  • Calculus - Exponential vs. Logistic functions
  • Videos - The Math of the Golden Ratio
  • side ways parabola
  • Rotations Geometry 9.4
  • תרגיל 2

Discover Topics

  • Pythagoras or Pythagorean Theorem
  • Linear Programming or Linear Optimization
  • Cone
  • Scatter Plot
  • Sphere

GeoGebra

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

Apps

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

Resources

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