Support · Stage 5 · Properties of geometrical figures B (Path)

Support Establish the 4 congruence tests for triangles (SSS, SAS, AAS and RHS)

Resources for the prerequisite content of this dot point: earlier-stage (or earlier sub-level) dot points in the same strand that students usually need first. Use these to fill gaps before or alongside the core lesson.

Prerequisite links are draft mappings generated from the syllabus structure (earlier stage, same strand, closest content). They are being reviewed by teachers. Spot a poor match? Tell us.

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Prerequisite dot points

Solve problems involving scale drawings, with or without digital tools

Stage 5 · Properties of geometrical figures A Draft mapping

Prove that the interior angle sum of a triangle is 180° with or without digital tools

Stage 4 · Properties of geometrical figures Draft mapping

  • Interactive toolEnrichment
    Desmos Geometry
    Desmos · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: Construct and drag figures to test angle conjectures.
  • Interactive toolEnrichment
    GeoGebra Classic
    GeoGebra · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: Dynamic geometry and graphing for constructions and proofs.
  • Corbettmaths practice questions: Angles: full circle (at a point)
    Corbettmaths · Web page · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Free printable graded practice questions (with answers) on angles: full circle (at a point) for drill or a quick check.
  • WorksheetDrill
    Kuta free worksheet: Angle sum of triangles and quadrilaterals
    Kuta Software · PDF · Printable PDF · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Printable skills-practice sheet with answer key on angle sum of triangles and quadrilaterals; good for drill or homework.
  • WorksheetDrill
    Kuta free worksheet: Triangle angle sum
    Kuta Software · PDF · Printable PDF · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Printable skills-practice sheet with answer key on triangle angle sum; good for drill or homework.
  • VideoStarter
    Corbettmaths video: Angles: triangle
    Corbettmaths · Video · Free · Link checked 2026-10-15 · No prep
    Use it for: Short worked-example video on angles: triangle to model the method before practice or for flipped revision.
  • VideoStarter
    Eddie Woo (WooTube): Basic Properties of Geometrical Figures playlist
    Eddie Woo – WooTube (YouTube) · Video · Free · Link checked 2026-10-15 · No prep
    Use it for: Sydney teacher Eddie Woo's recorded lessons on properties of geometrical figures; play a clip to model a method or for revision.

Classify quadrilaterals based on their properties

Stage 4 · Properties of geometrical figures Draft mapping

  • Interactive toolStarter
    Mathigon: Quadrilaterals
    Mathigon (Amplify) · Interactive (browser) · Free · Link checked 2026-10-15 · Hands-on, No prep
    Use it for: Explore the special quadrilaterals and their hierarchy.
  • Interactive toolStarter
    Mathsisfun: Quadrilaterals
    Maths Is Fun · Interactive (browser) · Free · Link checked 2026-10-15 · No prep
    Use it for: Draggable quadrilateral properties.
  • Corbettmaths practice questions: 2D shapes: quadrilaterals
    Corbettmaths · Web page · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Free printable graded practice questions (with answers) on 2d shapes: quadrilaterals for drill or a quick check.
  • WorksheetDrill
    Kuta free worksheet: Classifying quadrilaterals
    Kuta Software · PDF · Printable PDF · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Printable skills-practice sheet with answer key on classifying quadrilaterals; good for drill or homework.
  • WorksheetDrill
    Kuta free worksheet: Classifying triangles and quadrilaterals
    Kuta Software · PDF · Printable PDF · Free · Link checked 2026-10-15 · Answers included, No prep, Printable
    Use it for: Printable skills-practice sheet with answer key on classifying triangles and quadrilaterals; good for drill or homework.
  • VideoStarter
    Corbettmaths video: 2D shapes: quadrilaterals
    Corbettmaths · Video · Free · Link checked 2026-10-15 · No prep
    Use it for: Short worked-example video on 2d shapes: quadrilaterals to model the method before practice or for flipped revision.