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CAIE IGCSE Mathematics Extended E4.6.2 Calculate Unknown Angles and Give Geometric Explanations for Angles Questions

Calculate unknown angles formed when a transversal crosses parallel lines: identify corresponding and alternate angles as equal and co-interior angles as supplementary.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Extended

Exam points

  • Identify corresponding and alternate angle pairs formed by a transversal through parallel lines and use their equality to calculate unknown angles.
  • Use supplementary co-interior angles to set up and solve unknown-angle calculations.
  • State the parallel-line relationship that justifies each result.

CAIE IGCSE Mathematics Extended E4.6.2 Calculate Unknown Angles and Give Geometric Explanations for Angles Questions question 1

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Figure for Question CAIE IGCSE Mathematics Extended E4.6.2 Calculate Unknown Angles and Give Geometric Explanations for Angles Questions question 1 — CAIE IGCSE Mathematics Extended

The diagram shows two intersecting straight lines crossing two parallel lines.
Find the value of x.

x=
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