3.2.7

Ratios in Shapes

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Ratios in 2D Shapes

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2D shapes

  • 2D shapes are similar if all pairs of corresponding sides are in the same ratio.
  • When a 2D shape is enlarged by a scale factor of S the ratio of each original side to the enlarged side is 1 : S.

Jump to other topics

1Number

1.1Place Value

1.2Factors & Multiples

1.3Operations

1.4Fractions, Decimals & Percentages

1.5Growth & Decay

1.6Measurements & Units

1.7Accuracy

2Algebra

2.1Introduction to Algebra

2.2Graphs

2.3Solving Equations

2.4Sequences

3Ratio, Proportion & Rates of Change

4Geometry & Measures

4.1Introduction to Geometry

4.2Ruler & Compass Constructions

4.3Perimeter & Area

4.4Triangles, Quadrilaterals & Circles

4.5Transformations

4.6Triangle Formulae

4.73D Shapes

4.8Vectors

5Probability

6Statistics

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