Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Year 9 Mathematics
    1. Geometry

    Year 9 Mathematics

    Author:Patrick Robertson
    Topic:Angles, Congruence, General Quadrilateral, Geometry, Mathematics, Polygons, Similar Triangles, Geometric Transformations, Triangles

    Geometry

    • Complementary Angles Meaning

    • Supplementary Angles Meaning

    • Vertical Angles Exploration (1)

    • Exploring Alternate Interior Angles (V2)

    • Exploring Alternate Exterior Angles (V2)

    • Corresponding Angles and Parallel Lines

    • Same-Side-Interior Angles: Quick Investigation

    • Same-Side-Exterior Angles: Quick Investigation

    • Transversal Intersects Parallel Lines

    • Exploring Polygon Angles: Triangle through Octagon

    • Polygons: Exterior Angles - REVAMPED

    Next
    Complementary Angles Meaning

    New Resources

    • apec
    • רישום חופשי
    • Model sferyczny - dwunastościan-dwudziestościan
    • Damped Trochoidal Curve
    • Random Polar Curve (3)

    Discover Resources

    • SHS Proposed Camera Placement (Faulty)
    • eAssessment practice
    • Square Construction
    • ASmithTrapezoid
    • Why masters is important

    Discover Topics

    • Cuboid
    • Translation
    • Differential Equation
    • Square
    • Parametric Curves
    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®