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0580/12 Oct/Nov 2021, Question 6: Lines of Symmetry

Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 3 marks

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The question, in short

State the rotational symmetry order of a rectangle, then mark every line of symmetry on an equilateral triangle shown in a diagram.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Part (a) · 1 mark

Give the number of times a rectangle looks the same during a full turn.

  1. 1A rectangle looks the same after turns of 180° and 360°
  2. 2Order = 2

Answer2

Part (b) · 2 marks

On the pictured equilateral triangle, draw each axis about which it reflects onto itself.

  1. 1Draw a ruled line from each vertex to the midpoint of the opposite side
  2. 2That gives 3 lines of symmetry

AnswerThree correct lines only

Stuck on a step? Read the free lesson: Lines of Symmetry

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Also searched as: 0580/12/O/N/21 · 0580_w21_qp_12 · 0580 w21 12 · question 6.
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