Looking for a Co-Interior Angles Worksheet?

Once your students can name and classify acute, obtuse, right, straight, reflex and revolution angles, there’s little point in repeated lessons involving these same angle types. Why not allow them to dip their toes in the advanced angle pool of alternate, co-interior, corresponding and vertically opposite angles?  

Co-interior angles are often identified using a 匚 shape. On parallel lines, co-interior angles are supplementary. This means that the angles add up to 180°.

This worksheet provides students with the opportunity to identify the co-interior angles on various sets of parallel lines. Students are also required to calculate the size of the missing angle.

An answer key is included with your download to make marking fast and easy!

Tips for Differentiation + Scaffolding 

In addition to independent student work time, use this worksheet as an activity for:

• Whole-class review (via smartboard)
• Guided maths groups
• Independent practice
• Homework assignment
• Summative assessment

Some students may need a reminder of what co-interior angles are when completing the worksheet. Our Advanced Angles Factsheet is the perfect resource to paste into your students’ workbooks as a visual guide to refer back to while completing the worksheet.

Download This Printable Angles Worksheet

Use the Download button to access the easy-print black-and-white PDF.

Because this resource includes an answer sheet, we recommend you print one copy of the entire file, then make photocopies of the blank worksheet for students to complete. 

Looking for a more sustainable way to use this resource? Project the worksheet onto a screen and work through it as a class by having students record their answers in their notebooks.

Click below for more time-saving angles resources to cut down on your planning time!

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