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Edexcel IGCSE Math A Foundation 4.1 Angles Lines and Triangles Questions

Use this angles topic to identify angle types, calculate unknown angles and justify results using line, triangle and isosceles properties.

Syllabus
First assessment 2018
Course
Math A 4MA1
Level
Foundation

Exam points

  • Identify acute, obtuse, reflex and right angles from diagrams or marked shapes.
  • Calculate unknown angles using straight lines, parallel lines and intersecting lines.
  • Use triangle angle sums, exterior angles and isosceles properties to find values.

Covered syllabus points

4.1.A Distinguish between acute, obtuse, reflex and right4.1.B Angle properties of intersecting lines, parallel lines4.1.C The exterior angle of a triangle property and the angle4.1.D The terms ‘isosceles’, ‘equilateral’ and ‘right-angled

Question 1

[Maximum number: 1]

What type of angle is the angle marked x ?

Figure for Question 1 — Edexcel IGCSE Math A Foundation

Question 2

[Maximum number: 4]
Diagram NOT accurately drawn

Diagram NOT accurately drawn

ABC is a straight line.

Question (a)

(a)

Work out the value of x

[ 1 ]

Question (b)

(b)

Work out the value of y

You must show your working.

y=
[ 3 ]

Question 3

[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.

Question 4

[Maximum number: 1]
Diagram NOT accurately drawn

Diagram NOT accurately drawn

ABC is a straight line.

Work out the value of x

Question 5

[Maximum number: 3]
Diagram NOT accurately drawn

Diagram NOT accurately drawn

ABC is a straight line.

Work out the value of y

You must show your working.

y=
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