Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson

Outline

  1. Proofs
    1. Two-column proof (Corresponding Angles)
    2. Two-column Proof (Alt Int. Angles)
    3. Same-side Interior Angles Postulate
    4. Proving Lines Parallel #1

Proofs

Author:rdwire18, Jenny Secor

  • Two-column proof (Corresponding Angles)

  • Two-column Proof (Alt Int. Angles)

  • Same-side Interior Angles Postulate

  • Proving Lines Parallel #1

Next
Two-column proof (Corresponding Angles)

New Resources

  • Midpoint Theorem Questions: Mild
  • Rovnoběžnost rovin
  • Isosceles Right Triangle
  • Function Art 3D - Flower
  • GeoGebra 3D Modeling Workshop (March 8 2024)

Discover Resources

  • shapes Van Ettinger
  • Interpreting Functions
  • afgeleideinx=a
  • Chinese New Year Fireworks in Hong Kong
  • Perpendicular and Angle Bisectors

Discover Topics

  • Linear Functions
  • Geometric Mean
  • Step Functions
  • Logarithm
  • Circle
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

© 2026 GeoGebra®