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Learning objective

Identify, describe, and illustrate the following transformations without combining them: 1. Reflect a shape across a vertical or horizontal line. 2. Rotate a shape around the origin, vertices, or midpoints of its edges by multiples of 90 degrees. 3. Enlarge a shape from a center using positive or fractional scale factors. 4. Translate a shape using a vector.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE MathematicsCore Transformations and vectors

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Quick explanation

Identify, describe, and illustrate the following transformations without combining them: 1. Reflect a shape across a vertical or horizontal line. 2. Rotate a shape around the origin, vertices, or midpoints of its edges by multiples of 90 degrees. 3. Enlarge a shape from a center using positive or fractional scale factors. 4. Translate a shape using a vector

  • This point belongs to Transformations, especially Transformations outcomes.
  • You need to be able to identify, describe, and illustrate the following transformations without combining them: 1. Reflect a shape across a vertical or horizontal line. 2. Rotate a shape around the origin, vertices, or midpoints of its edges by multiples of 90 degrees. 3. Enlarge a shape from a center using positive or fractional scale factors. 4. Translate a shape using a vector.
  • The key ideas to know are Describe, Sketch, and Show.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeSketchShowConstruct

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Paper 2 structured question: Transformations

Paper 2Core or Extended Mathematics2 marks

Description

Transformation Task

You are given a triangle with vertices A(1, 2), B(3, 4), and C(5, 2).

  1. a

    Calculate Reflect the triangle across the y-axis and provide the new coordinates of the vertices.

    Aim for approximately 2 distinct marking points.

    [2]
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