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YEAR 9 · GEOMETRY AND TRANSFORMATIONS

Topic review.

Connect the key ideas, then choose a practice paper.

01 / QUICK RECAP

Connect the ideas.

  • Name the angle fact used at each step.
  • Enlarge distances from the stated centre; do not confuse scaling with translation.
  • Angles and side ratios are invariant under enlargement; area scales by the square of the length factor.
  • Use equal compass radii and justify the resulting equal distances.
  • Trace geometric instructions in order, test varied cases, and support conclusions with reasons.
02 / PRACTICE TESTS

Put it together.

Choose a paper and show your working.

  1. Geometry and transformations — Practice test 1

    Angle reasoning, enlargement, constructions and geometric algorithms, building from short calculations to explanations.

    16 questions · 47 marks · 55 minutes · By hand
  2. Geometry and transformations — Practice test 2

    A second mixed paper with algebraic angles, scale reasoning, construction checks and proof.

    16 questions · 47 marks · 55 minutes · By hand
  3. Geometry and transformations — Applications test

    Use geometric reasoning to evaluate plans, repair procedures and justify constructions in practical situations.

    16 questions · 54 marks · 60 minutes · By hand
Curriculum reference & lesson scope

Australian Curriculum v9 / South Australian Curriculum

Angle reasoning consolidation; enlargements using coordinates/digital geometry; invariant and changing properties; geometric constructions; sequences of steps and decisions; testing/refining construction algorithms; explaining geometric reasoning.

Official curriculum source ↗

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