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Co interior angles worksheet
Help your students prepare for their Maths GCSE with this free co interior angles worksheet of 30 + questions and answers
- Section 1 of the co interior angles worksheet contains 36 skills-based co interior angles questions, in 3 groups to support differentiation
- Section 2 contains 3 applied co interior angles questions with a mix of worded problems and deeper problem solving questions
- Section 3 contains 3 foundation and higher level GCSE exam style co interior angles questions
- Answers and a mark scheme for all co interior angles 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
- Free downloadable and printable resources
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Co interior angles at a glance
Co interior angles is the name given to a pair of angles between a transversal and the pair of parallel lines it cuts. Co interior angles are both on the same side of the transversal and are the two angles between the parallel lines. Co interior angles add up to 180o. They are supplementary angles – if you put them next to each other, they would make a straight line.
This angle fact about co interior angles, as well as rules about other types of angles and other angle relationships, can be used to find the size of missing angles on a diagram.
This rule about co interior angles also implies that any two neighbouring angles in a parallelogram add up to 180o and therefore that the size of the angles opposite each other is equal. A rectangle is a special type of parallelogram where all four angles are right angles.
Looking forward, students can then progress to additional angles in parallel lines worksheets or more geometry worksheets, for example an angles in polygons worksheet or an alternate angles worksheet.
For more teaching and learning support on Geometry our GCSE maths lessons provide step by step support for all GCSE maths concepts.
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