Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Parallel Lines & Related Angles
    1. Simple (More Elegant) "Proofs" without Words
    2. Earlier Items

    Parallel Lines & Related Angles

    Author:Rachel Janowski, Tim Brzezinski
    Topic:Angles
    Parallel Lines & Related Angles

    Table of Contents

    • Simple (More Elegant) "Proofs" without Words

      • Exploring Corresponding Angles (V2)
      • Alternate Interior Angles Theorem (V1)
      • Alternate Exterior Angles Theorem (V1)
      • Same Side Interior Angles Theorem
      • Exploring Same Side Exterior Angles
      • Alternate Interior Angles Theorem (V3)
      • Alternate Exterior Angles Theorem (V3)
    • Earlier Items

      • Naming Angle Positions
      • Parallel Lines & Related Angles
    Next
    Exploring Corresponding Angles (V2)

    New Resources

    • GGB is Awesome!
    • Using Experimental Probability to Estimate π - Monte Carlo Method
    • Select an object for a time to start a command. Light
    • Average Value
    • Visualizing the Pythagorean Identity with Sine and Cosine

    Discover Resources

    • Pravilo za triagolnik
    • MHF4U2 Trouver les intersections de fonctions
    • Exponent Practice (advanced)
    • Slope (Quiz) III
    • Similarity Part 1
    • Algebra Tiles 2

    Discover Topics

    • Diagrams
    • Integral Calculus
    • Geometric Mean
    • Pyramid
    • Differential Calculus
    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®