ASPECTS OF NUMERACY FOCUS AREA 3

APPLYING CONCEPTS OF ANGLES AND GEOMETRY

early in STAGE 5

  • Identifies similar figures and describes their properties informally
  • Uses scale factors and proportion statements to determine unknown lengths in similar figures
  • Uses scales on maps, plans and drawings


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end of STAGE 5

  • Uses deductive reasoning with congruent triangles
  • Verifies properties of isosceles and equilateral triangles and special quadrilaterals using congruent triangles
  • Uses conditions for triangles to be similar
  • Uses results for the sum of exterior and interior angles in polygons


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