GeoGebra
GeoGebra
  • Circle Theorems
  • Theorem 1 Chord/radius
  • Theorem 2 Angle subtended by a chord at centre and circumference
  • Theorem 3 Angles subtended by the same chord (bowtie)
  • Theorem 5 Exterior angle of a cyclic quad
  • Theorem 4 opposite angles of a cyclic quadrilateral
  • Theorem 6 Tangent/radius
  • Theorem 7 Two tangents from common point
  • Theorem 8 Tangent/chord

Circle Theorems

Author:
PCARTS
Topic:
Circle, Geometry
A summary of the 7 basic circle theorems.
Circle Theorems

Table of Contents

  • Theorem 1 Chord/radius

    • Theorem 1
  • Theorem 2 Angle subtended by a chord at centre and circumference

    • Theorem 2
  • Theorem 3 Angles subtended by the same chord (bowtie)

    • Theorem 3
  • Theorem 5 Exterior angle of a cyclic quad

    • Theorem 5
  • Theorem 4 opposite angles of a cyclic quadrilateral

    • Theorem 4
  • Theorem 6 Tangent/radius

    • Theorem 6
  • Theorem 7 Two tangents from common point

    • Theorem 7
  • Theorem 8 Tangent/chord

    • Theorem 8
Next
Theorem 1

New Resources

  • Bibi Khanum moskee - square pattern- ks
  • Gur Emir complex - mu
  • Regular N-GON: What Happens as N Approaches Infinity?
  • Bibi Khanum entrance gate - minarets - ks
  • Gur Emir wall pattern - ks

Discover Resources

  • Utiliser un rapporteur pour mesurer un angle
  • Factorising Algebraic Expressions
  • pre_aa_template_1_2.ggb_1M_Ong_Lee-Ann
  • Inverse Functions
  • Blank Grid_Test

Discover Topics

  • Probability
  • Median Line
  • Hypothesis Testing
  • Linear Functions
  • Parabola

GeoGebra

  • About
  • Partners
  • GeoGebra on Tests
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Terms of Service Privacy License
  • Facebook Twitter YouTube