Search
Google Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Triangles
    1. The Angles of a Triangle
    2. Triangles Proofs and Theorems
    3. Practice Problems

    Triangles

    Author:Judith Hilinski
    Topic:Triangles
    The Angles of a Triangle Proving that Triangles are Congruent
    Triangles

    Table of Contents

    • The Angles of a Triangle

      • Basic Definitions: Triangles
      • Triangles and Their Classification
      • Symbols and Examples-Angles in Triangles
    • Triangles Proofs and Theorems

      • Copy of triangle angle-sum theorem
      • Triangle Sum Theorem
    • Practice Problems

      • Practice Problems with Triangles
    Next
    Basic Definitions: Triangles

    New Resources

    • Adding Decimal Numbers and Shortest Path Strategies
    • גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
    • 立体几何-公理3及推论
    • z`]]
    • apec

    Discover Resources

    • tessellation 1
    • pplot05
    • Sketching y=sin(x)
    • EM Wave Simulation
    • IM Hanger Balance - 4 Shapes

    Discover Topics

    • Coordinates
    • Statistics
    • Percentages
    • Step Functions
    • Pie Chart or Circle Chart
    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®