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Stage 5 · Properties of geometrical figures A · Solve problems using ratio and scale factors in similar figures · Topic: Geometry: shapes & angles · Year 9, 10

Determine the scale factor for pairs of similar polygons and circles

Dot point ID k-10-2022-stage-5-properties-of-geometrical-figures-a/pgf-sfs-stg5-02 · NESA code MA_K_10_CP_PGF_SFS_STG5_02 · See it on the NSW Curriculum website ↗

↩SupportBuild the prerequisite skills first · 13 resources ★EnrichExtension & rich tasks · 0 resources

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

MA5-GEO-C-01 identifies and applies the properties of similar figures and scale drawings to solve problems

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
Mathigon: Dilations (enlargements)
Mathigon (Amplify) · Interactive (browser) · Free · Link checked 2026-10-15 · Hands-on, No prep
Use it for: Enlarge shapes about a centre and see how scale factor changes lengths.
Also tagged to: Apply an appropriate scale to enlarge or reduce a diagram

Focus area resources

Checked resources for Properties of geometrical figures A 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
Unit/Planning
Stage 5 Unit 9 – surveying (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-NLI-P-01, MA5-TRG-C-02, MA5-TRG-P-01