Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Diagonals of Parallelogram and Congruent Triangles

Author:Heather O'Brien, James McGuinness

New Resources

  • Congruent Sides & Angles in △s: Exploration
  • Right Triangle Inscribed in a Semicircle
  • Midpoint Theorem (V2): Integer Solutions
  • Pythagorean Theorem: Extension Exercises
  • Angle Addition Postulate (V2) - Integer Solutions

Discover Resources

  • Pythagoras Theorem
  • Geometry Polygon Drawing Worksheet
  • Maddie_Meulemans_Qtr1project_01
  • Isoceles Trapazoid
  • Globe-Horizon-GreatCircle-2

Discover Topics

  • Sequences and Series
  • Curve Sketching
  • Ratios
  • Division
  • Histogram
AboutPartnersHelp Centre
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®