Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Proofs
    1. Vertical Angle Theorem
    2. Two-column proof (Corresponding Angles)
    3. Two-column Proof (Alt Int. Angles)
    4. Same-side Interior Angles Postulate
    5. Converse of Same Side Interior Angles Postulate
    6. Prove Converse of Alternate Interior Angles Theorem
    7. Converse of Corresponding Angles Theorem
    8. Proving Lines Parallel #1

Proofs

Author:M. Herring, Jenny Secor

  • Vertical Angle Theorem

  • Two-column proof (Corresponding Angles)

  • Two-column Proof (Alt Int. Angles)

  • Same-side Interior Angles Postulate

  • Converse of Same Side Interior Angles Postulate

  • Prove Converse of Alternate Interior Angles Theorem

  • Converse of Corresponding Angles Theorem

  • Proving Lines Parallel #1

Next
Vertical Angle Theorem

New Resources

  • Average Value of a Function
  • Neuberg's Theorem
  • רישום חופשי
  • Slope Between 2 Points (Phase 2)
  • Area Between Two Curves

Discover Resources

  • abibat project
  • Protractor Reading
  • Kafli 1 dæmi 2
  • PolygonTypes
  • Параллелограмм байгуулах

Discover Topics

  • Median Value
  • Vectors
  • Quadrilaterals
  • Linear Regression
  • Random Experiments
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2025 GeoGebra®