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Edexcel IGCSE Math A 4.1.D isosceles equilateral right triangles

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
Foundation

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.

4.1.D The terms ‘isosceles’, ‘equilateral’ and ‘right-angled question 1

[Maximum number: 1]

Here are three shapes.

A

A

B

B

C

C

Shape A is a triangle.

Write down the mathematical name for this type of triangle.

Shape B is a rectangle.

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