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David Cheung

  • Tangent intersecting extended chord

    Activity

    David Cheung

  • Circle Theorems for CIE IGCSE Mathematics

    Book

    David Cheung

  • Chords intersecting outside the circle

    Activity

    David Cheung

  • Chords intersecting inside the circle

    Activity

    David Cheung

  • External tangents from a point outside the circle

    Activity

    David Cheung

  • Perpendicular bisector of a chord

    Activity

    David Cheung

  • Angle at the centre and angle at the circumference

    Activity

    David Cheung

  • Angles in alternate segments

    Activity

    David Cheung

  • Angles in alternate segments

    Activity

    David Cheung

  • Distance of equal chords from the centre

    Activity

    David Cheung

  • Angles in opposite segments

    Activity

    David Cheung

  • Opposite angles in a cyclic quadrilateral

    Activity

    David Cheung

  • Angles in the same segment

    Activity

    David Cheung

  • Angle between tangent and radius

    Activity

    David Cheung

  • Angles in a semi-circle

    Activity

    David Cheung