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Outline

  1. Top Drawer Teachers: Geometry-edit
    1. Properties of Chords and Angles
    2. Lines from the Centre
    3. Angles at the Centre and Circumference
    4. The Angle in a Semi-Circle
    5. Angles in the Same Segment
    6. Angles of Cyclic Quadrilaterals
    7. Tests for Cyclic Quadrilaterals (1)
    8. Tests for Cyclic Quadrilaterals (2)
    9. Tests for Cyclic Quadrilaterals (3)
    10. The Angle Between a Tangent and a Radius
    11. Tangents from an External Point
    12. The Angle Between a Tangent and a Chord
    13. Intersecting Circles
    14. Intersecting Chords
    15. Tangents and Secants
    16. The Angle Sum of a Triangle
    17. Linking Angles
    18. An Angle in the Bend
    19. Morphing a rectangle

Top Drawer Teachers: Geometry-edit

Author:Ronan Downes, aamtinc
Topic:Geometry
This collection of applets can be used to investigate circle geometry theorems. Top Drawer Teachers is a project of The Australian Association of Mathematics Teachers (AAMT) Inc. http://topdrawer.aamt.edu.au

  • Properties of Chords and Angles

  • Lines from the Centre

  • Angles at the Centre and Circumference

  • The Angle in a Semi-Circle

  • Angles in the Same Segment

  • Angles of Cyclic Quadrilaterals

  • Tests for Cyclic Quadrilaterals (1)

  • Tests for Cyclic Quadrilaterals (2)

  • Tests for Cyclic Quadrilaterals (3)

  • The Angle Between a Tangent and a Radius

  • Tangents from an External Point

  • The Angle Between a Tangent and a Chord

  • Intersecting Circles

  • Intersecting Chords

  • Tangents and Secants

  • The Angle Sum of a Triangle

  • Linking Angles

  • An Angle in the Bend

  • Morphing a rectangle

Next
Properties of Chords and Angles

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