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Stage 5 · Properties of geometrical figures B (Path) · Apply logical reasoning to numerical problems involving plane shapes · Topic: Geometry: shapes & angles · Year 9, 10

Establish the sum of the exterior angles of any convex polygon is 360° and verify this result

Dot point ID k-10-2022-stage-5-properties-of-geometrical-figures-b-path/prg-lms-stg5-03 · NESA code MA_K_10_CP_PRG_LMS_STG5_03 · See it on the NSW Curriculum website ↗

↩SupportBuild the prerequisite skills first · 8 resources ★EnrichExtension & rich tasks · 3 resources

Outcomes for this focus area (MA5-GEO-P-01)

MA5-GEO-P-01 establishes conditions for congruent triangles and similar triangles and solves problems relating to properties of similar figures and plane shapes (Path: Ext)

Core resources for this dot point

On-level resources, grouped by type. Need the building blocks? Use Support. Ready for more? Use Enrich.

Interactive tool

Interactive toolStarter
Maths Is Fun: Exterior angles of polygons
Maths Is Fun · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
Use it for: Shows the exterior angles always add to 360°.
Also tagged to: Define the exterior angle of a convex polygon

Focus area resources

Checked resources for Properties of geometrical figures B (Path) as a whole (not mapped to a single dot point).

Unit/Planning
Stage 5 Unit 1 – geometric representations (sample unit of learning)
NSW Department of Education · Sample unit (DOCX) · Editable document · Free · Link checked 2026-10-15 · Australian context, Editable, Teacher notes
Outcome codes found in document: MA5-GEO-C-01, MA5-GEO-P-01, MA5-NET-P-01