Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Poncelet-Steiner Theorem
    1. Thales' Theorem
    2. Ceva's Theorem
    3. Lemma 1
    4. Lemma 2
    5. Lemma 3
    6. Lemma 4
    7. Lemma 5
    8. Lemmas 1-5 and Basic Problems I-III

    Poncelet-Steiner Theorem

    Author:Kristen
    Poncelet-Steiner Theorem: All constructions possible with a straightedge and compass are possible with a straightedge alone given a circle and its center.
    Poncelet-Steiner Theorem

    Table of Contents

    • Thales' Theorem

      • Thales' Theorem
    • Ceva's Theorem

      • Ceva's Theorem
    • Lemma 1

      • Lemma 1- Parallel Lines
    • Lemma 2

      • Lemma 2- Perpendicular Lines
    • Lemma 3

      • Lemma 3- Transferring a Length in a Given Direction
    • Lemma 4

      • Lemma 4- The Fourth Proportional
    • Lemma 5

      • Lemma 5- Square Roots
    • Lemmas 1-5 and Basic Problems I-III

      • Lemmas 1-5 and Basic Problems I-III
    Next
    Thales' Theorem

    New Resources

    • Building Figures with Set Areas
    • Conway Circle Theorem
    • အခြေခံ data အခေါ်အဝေါ်များ
    • Perimeter of Rectangle
    • גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם

    Discover Resources

    • Coordinates: Dilation
    • linear art
    • Matt Geogebra
    • Intersecting Planes

    Discover Topics

    • Kite
    • Ratios
    • Geometric Transformations
    • Perimeter
    • Vectors 3D (Three-Dimensional)
    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®