Classifying Angles Worksheets
Read angles in degrees, classify them and add adjacent angle measures.
Before you begin
Read labeled dimensions and coordinates. Recall multiplication facts and length units.
Worked example
Classify an angle measuring 70° as acute, right or obtuse.
- Acute: less than 90°. Right: exactly 90°. Obtuse: between 90° and 180°.
Answer: Acute
Check your result using the method in the example before moving to the next question.
Choose your level
These sets use the same exercise types and number ranges across level labels. Choose a fresh set for additional practice.
- Easy: Start with the preview and follow the worked example.
- Medium: Practice the same exercise types with a fresh numbered set.
- Hard: Use another set to practice explaining and checking your answers.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
Preview and print an easy set
Try six questions below, or choose a full set at your level.
1
Classify an angle measuring 50° as acute, right or obtuse.
2
Classify an angle measuring 70° as acute, right or obtuse.
3
Classify an angle measuring 90° as acute, right or obtuse.
4
Classify an angle measuring 120° as acute, right or obtuse.
5
Classify an angle measuring 10° as acute, right or obtuse.
6
Classify an angle measuring 140° as acute, right or obtuse.
Answer Key
1. Acute2. Acute3. Right4. Obtuse5. Acute6. Obtuse