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

Practise Extended CAIE IGCSE Mathematics by combining geometric angle facts and giving concise reasons for each result.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Extended

Exam points

  • Use geometric relationships to calculate unknown angles in diagrams.
  • Give a clear geometric explanation for each angle result.
  • Combine parallel-line, triangle and polygon facts in multi-step problems.

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

[Maximum number: 3]
NOT TO SCALE

NOT TO SCALE

The diagram shows two straight lines intersecting two parallel lines.
Find the values of a, b and c.
a=......b=......c=......\begin{aligned}a&=......\\b&=......\\c&=......\end{aligned}

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