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Edexcel IGCSE Math A 4.7 geometrical reasoning

Use this geometrical-reasoning page to calculate angles and support each stage with standard facts about lines, shapes and circles.

Syllabus
First assessment 2018
Course
Math A 4MA1
Level
Foundation

Exam points

  • Calculate angles in line, triangle, polygon or circle diagrams before giving reasons.
  • Use named geometry facts such as isosceles angles, straight lines or circle theorems.
  • Explain each stage when the question asks for a reason for the angle value.

Covered syllabus points

4.7.A Give informal reasons, where required, when arriving at

4.7 Geometrical reasoning question 1

[Maximum number: 1]
Diagram NOT accurately drawn

Diagram NOT accurately drawn

ABC is a straight line.

Give a reason for your answer to (i)
/

Figure for Question 4.7 Geometrical reasoning question 1 — Edexcel IGCSE Math A Foundation

Diagram NOT accurately drawn
CDE is an equilateral triangle.
ABCF is a quadrilateral.
BCE and DCF are straight lines.

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