FREE DOWNLOAD

**Help your students prepare for their Maths GCSE with this free ****angles on a straight line worksheet ****of 44 questions and answers**

- Section 1 of the angles on a straight line worksheet contains 36 skills-based angles on a straight line questions, in 3 groups to support differentiation
- Section 2 contains 4 applied angles on a straight line questions with a mix of worded problems and deeper problem solving questions
- Section 3 contains 4 foundation and higher level GCSE exam styleΒ questionsΒ
- Answer keys and a mark scheme for all questions are provided
- Questions follow variation theory with plenty of opportunities for students to work independently at their own level
- All questions created by fully qualified expert secondary maths teachers
- Suitable for GCSE maths revision for AQA, OCR and Edexcel exam boards

You can unsubscribe at any time (each email we send will contain an easy way to unsubscribe). To find out more about how we use your data, see our privacy policy.

Measuring angles with a protractor on a scale diagram is one way to find the size of unknown angles. However, a more efficient method is to use known angle facts when finding missing angles or calculating angles in 2D shape problems.Β

Angles on a straight line sum to 180Β°, so if, for example, we know that acute angle βaβ and obtuse angle βbβ lie on a straight line, and we know the size of angle βaβ, we can find the size of angle βbβ by subtracting angle βaβ from 180Β°.Β

A special case of this rule is pairs of angles whose sum is 180Β° – these are called supplementary angles (this terminology is not required at GCSE, but the idea is useful).Β

Sometimes a missing angle problem might include a right angle, marked with the β symbol. This can confuse students, so itβs important they recognise the symbol for a right angle, use subtraction from 180Β° to leave 90Β°, and then use other information to solve to find the unknown angle.

The fact about angles on a straight line can be extended further to 2D shape problems requiring students to solve an equation to find unknown angles.Β

Looking forward, students can then progress to additionalΒ angles rules worksheetsΒ and otherΒ geometry worksheets, for example anΒ angles in polygons worksheetΒ orΒ volume and surface area of spheres worksheet.

For more teaching and learning support on Geometry our GCSE maths lessons provide step by step support for all GCSE maths concepts.Β

With Third Space Learning's **secondary maths tutoring programmes**, students in Year 7-11 receive regular one to one maths tutoring to address gaps, build confidence and boost progress.

"*My confidence in the tutoring is high. We've had some phenomenal results. I even had one girl get a Grade 8 this year; she came to every tutoring session.*"

Stacey Atkins, Maths Director, Outwood Grange Academies Trust