Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson

Outline

  1. SANKAR'S MATHEMATICS - CLASS IX
    1. LINES AND ANGLES
    2. TRIANGLES
    3. QUADRILATERALS
    4. AREAS
    5. CIRCLES

    SANKAR'S MATHEMATICS - CLASS IX

    Author:R SANKARA NARAYANA REDDY
    Topic:Mathematics
    SANKAR'S MATHEMATICS - CLASS IX

    Table of Contents

    • LINES AND ANGLES

      • TYPES OF ANGLES
      • ANGLE SUM PROPERTY OF A TRIANGLE
      • TYPES OF ANGLES
      • TRANSVERSAL AND PARALLEL LINES
    • TRIANGLES

      • POINTS OF CONGRUENCE IN A TRIANGLE
      • AREA RELATED TRIANGLE
    • QUADRILATERALS

      • CYCLIC QUADRILATERAL
      • PROPERTIES OF PARALLELOGRAM
    • AREAS

      • PROPERTIES OF PARALLELOGRAM
    • CIRCLES

      • ANGLE IN SEMI CIRCLE
      • Number of circles through 2 distinct points
    Next
    TYPES OF ANGLES

    New Resources

    • Right Triangle Inscribed in a Semicircle
    • Basic and Compound Inequality Illustrator
    • Angle Addition Postulate (V2) - Integer Solutions
    • Midpoint Theorem (V2): Integer Solutions
    • Linear Combination of Vectors

    Discover Resources

    • lightIntensity
    • Educated monkey
    • divide a line segment into n parts ,n=5
    • Year 4: All About Nets
    • สามเหลี่ยมปีทาโกรัส

    Discover Topics

    • Normal Distribution
    • Area
    • Variance
    • Square
    • Boxplot
    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®