Year 4 Angles Worksheet — Level 1 — Answers

Answer sheet with worked solutions for the Year 4 angles worksheet.

Year 4 · Mathematics · Angles

Success Tutoring

State the angle rule you use.

1.Classify an angle of 267°.

Answer: reflex

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

2.Classify an angle of 10°.

Answer: acute

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

3.Classify an angle of 114°.

Answer: obtuse

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

4.Classify an angle of 325°.

Answer: reflex

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

5.Classify an angle of 85°.

Answer: acute

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

6.Classify an angle of 72°.

Answer: acute

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

7.Classify an angle of 205°.

Answer: reflex

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

8.Classify an angle of 285°.

Answer: reflex

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

9.Classify an angle of 291°.

Answer: reflex

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

10.Classify an angle of 287°.

Answer: reflex

Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex > 180°.

Marking tips

Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
Celebrate what went well first, then pick one thing to work on next.