A worksheet on classifying angles as acute, right, obtuse or straight. There is a table of practice identifying angles given their measures. Solutions are included.

Are your students struggling to tell the difference between an acute, obtuse, right, or straight angle? This print-and-go practice activity sheet is the ultimate tool to help them master angle definitions using exact numerical measurements!

This clean, no-prep resource is designed to build absolute maths fluency. Instead of just guessing based on a diagram, students are challenged to look at different degree values—including tricky borderline numbers like 83°, 91°, and 179°—and categorise them correctly. It is excellent for independent practice, quick maths assessments, or homework assignments.

What is Included?

• Rigorous Classification Practice: Features a wide variety of numerical degree values to test true understanding of angle categories.
• Clean Checkbox Matrix Layout: A highly organised table structure that makes it incredibly easy for students to complete and completely hassle-free for you to mark.
• Borderline Degree Focus: Includes critical values close to 90° and 180° to ensure students know the exact rules and boundaries for each angle type.
• Full Answer Key: Save hours of marking time with a complete, clear solutions sheet that you can project on the board for fast student self-assessment or peer marking.

Perfect For:

• Key Stage 2 (KS2): Year 4, Year 5 and Year 6 core geometry instruction.
• Key Stage 3 (KS3): Year 7 review and baseline secondary remediation.
• Flexible Use: Ideal for quick maths zones, morning starters, exit tickets, or hassle-free cover lessons.

Curriculum Alignment:

• UK National Curriculum / KS2 & KS3 Maths: Geometry (Properties of shapes) – Identify acute and obtuse angles and compare and order angles by size; identify right angles and recognise that a straight line is equal to two right angles (180°).

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