Lesson 3: Chord Properties (Bisector)
Constructing circles with 3 non-collinear points
Intersecting Circles
Lesson 4: Angle Properties (Introduction)
Angle Revision
Thales' Theorem
Angle at Centre & Circumference
Lesson 7: Tangent Properties (Alternate Segment)
Angle in the Alternate Segment
Lesson 8: Secant Properties (Introduction)
Product of Intercepts (Chords & Secants)
NESA web-page of Stage 5.3 Circle Geometry can also be accessed here: