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Edexcel IGCSE Math A Higher 4.1 D the Terms Isosceles Equilateral and Right Angled Questions

Practise special-triangle questions by using equal sides to match base angles and combining those facts with line or quadrilateral angles.

Syllabus
First assessment 2018
Course
Math A 4MA1
Level
Higher

Exam points

  • Use equal sides in an isosceles triangle to identify equal base angles.
  • Combine right-angle, equilateral or isosceles facts with straight-line angles.
  • Calculate unknown angles in diagrams containing triangles and quadrilaterals.

Edexcel IGCSE Math A Higher 4.1 D the Terms Isosceles Equilateral and Right Angled Questions question 1

[Maximum number: 4]

The diagram shows the triangle PQR.

Diagram NOT accurately drawn

Diagram NOT accurately drawn

In the diagram, all the angles are in degrees.
R P=R Q
Find the value of y.
Show clear algebraic working.

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