Year 9 · Phase 4 (Years 9-10) · Geometry
Circles, lines and angles
What the teaching sequence covers here
Identify and relate the parts of a circle, including the chord, radius, diameter and circumference, reason about unknown angles where lines intersect parallel lines (corresponding, alternate and co-interior angles), and use those angles to verify that two lines are parallel.
This is ChalkBee's own paraphrase of the official teaching sequence, not the Ministry's wording. Tahurangi curriculum content is Crown copyright, Ministry of Education, licensed CC BY-NC 4.0, so we describe it in our own words and cite the source: NZC Mathematics and Statistics Phase 4 (Years 9-10). Always check the official page for the exact requirement.
nz-p4-geo-01. The Ministry of Education does not assign alphanumeric codes to teaching-sequence statements; this id is a stable site-internal reference.Worksheet gap
ChalkBee does not yet have a suitably matched Year 9 worksheet for this part of the teaching sequence. You can still build practice from the worksheet generator, and we would rather show a gap than overclaim coverage.