Search

Outline

  1. Area of Polygons
    1. Triangles
    2. Quadrilaterals

    Area of Polygons

    Author:Ben Roth
    Topic:Area, Polygons
    This book contains student created proofs for the areas of polygons.
    Area of Polygons

    Table of Contents

    • Triangles

      • Right Triangle
      • Right Triangle
      • Right Angle Triangle
      • Right Angle Triangle
      • Right Angle Triangle
      • Acute Triangle
      • Acute Triangle
      • Obtuse Triangle Area
      • Obtuse-Triangle#3
      • Obtuse Triangle
      • Area of a Obtuse Triangle (Proof)
    • Quadrilaterals

      • Parallelogram
      • Parallelogram
      • Parallelogram Proof
      • Proof for Area of a Parallelogram (Maek)
      • Parallelogram
      • Area of of a Parallelogram
      • Trapezoid Formula Proof
    Next
    Right Triangle

    New Resources

    • Angle Addition Postulate (V2) - Integer Solutions
    • Linear Equation Graphs: Thin Slice
    • GeoGebra 3D Modeling Workshop (March 8 2024)
    • Odd Function Explorer
    • Segment Addition Postulate (Mild Questions)

    Discover Resources

    • Archimedes' Method - Proposition 5
    • clac one
    • Numerical methods - linear interpolation
    • Parallelogram Template (Scaffolded Discovery)
    • Surface Area of a Cuboid Self Assessment drill

    Discover Topics

    • Median Value
    • Derivative
    • Perimeter
    • Geometric Mean
    • Parabola
    AboutPartnersHelp Centre
    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®