Stage 4 · Properties of geometrical figures · Apply the properties of triangles and quadrilaterals · Topic: Geometry: shapes & angles · Year 7, 8
Prove that any exterior angle of a triangle equals the sum of the 2 interior opposite angles
Dot point ID k-10-2022-stage-4-properties-of-geometrical-figures/pro-apt-stg4-02 · NESA code MA_K_10_CP_PRO_APT_STG4_02 · See it on the NSW Curriculum website ↗
↩SupportBuild the prerequisite skills first · 0 resources★EnrichExtension & rich tasks · 2 resources
Outcomes for this focus area (MA4-GEO-C-01)
MA4-GEO-C-01 identifies and applies the properties of triangles and quadrilaterals to solve problemsCore resources for this dot point
On-level resources, grouped by type. Need the building blocks? Use Support. Ready for more? Use Enrich.
Worksheet
- WorksheetDrillKuta free worksheet: The exterior angle theoremUse it for: Printable skills-practice sheet with answer key on the exterior angle theorem; good for drill or homework.
Video
- VideoStarterEddie Woo (WooTube): Basic Properties of Geometrical Figures playlistUse it for: Sydney teacher Eddie Woo's recorded lessons on properties of geometrical figures; play a clip to model a method or for revision.
Focus area resources
Checked resources for Properties of geometrical figures as a whole (not mapped to a single dot point).