Search
Google Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Two-Dimensional Shapes and Their Attributes
    1. Lines and Line Segments
    2. Polygons
    3. Angles
    4. Triangles
    5. Quadrilaterals

    Two-Dimensional Shapes and Their Attributes

    Author:Lillian Petersen
    Two-Dimensional Shapes and Their Attributes

    Table of Contents

    • Lines and Line Segments

      • Explore Parallel Lines
      • Exploring Perpendicular Lines
      • Creating Lines
    • Polygons

      • Geoboard Polygons
      • Concave/Convex
    • Angles

      • How to Construct an Angle
      • Looking at Angles
      • Animated Acute Angles
      • Animated View of Obtuse Angles.
      • Types of Angles
    • Triangles

      • Triangle Lengths Exploration
      • Triangle Classification Challenge
      • Triangle Classification Examples
      • Triangle with Sides and Angles
    • Quadrilaterals

      • Quadrilaterals
      • Classifying Quadrilaterals
    Next
    Explore Parallel Lines

    New Resources

    • Fractals: The Pythagoras tree
    • A 3D Problem about Shadow
    • seo tool
    • Untitled
    • Pythagoras fractal tree: Step 2

    Discover Resources

    • Circles - Length and Area
    • Comparing Tables
    • kegelDWI
    • Changing compounding intervals with trace
    • Energy conservation
    • schaltflaeche-wert-aendern_2
    • rotation

    Discover Topics

    • Vectors
    • Median Value
    • Similarity Transformation or Similarity
    • Distributions
    • Pyramid
    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®