Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Parallel Lines and Angles Problem
    1. Proving Theorems
    2. Applying Theorems

    Parallel Lines and Angles Problem

    Author:Aaron Dankman
    Topic:Angles
    Review, exercises, and a fun challenge related to some angle theorems
    Parallel Lines and Angles Problem

    Table of Contents

    • Proving Theorems

      • Defining Congruence
      • Proving Congruence
      • Proof: Vertical Angles Theorem
      • Proof: Corresponding Angles Theorem
      • Fun!
      • Prove Angle Congruence
    • Applying Theorems

      • Part 1: Observe and Conjecture
      • Part 2: Investigate
      • Part 3: Prove
    Next
    Defining Congruence

    New Resources

    • Slope Between 2 Points (Phase 2)
    • Rolling Circles and Polygons
    • Building Triangles with Set Areas
    • Area of a Circle Illustrated
    • רישום חופשי

    Discover Resources

    • prob2b
    • Analyt Project
    • Perpendicular Bisectors of a Triangle Redo
    • ב2 עמוד 484 תרגיל 24
    • shapes transformed 2
    • Morley's Theorem

    Discover Topics

    • Volume
    • Similarity Transformation or Similarity
    • Median Line
    • Scalene Triangles
    • Differential Equation
    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®