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Year 4 Angles Worksheet — Level 1 (Set 2) — Answers

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

Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Angles

Year 4 Angles Worksheet — Level 1 (Set 2) — Answers

State the angle rule you use.

1.Classify an angle of 254°.

Answer: reflex

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

2.Classify an angle of 340°.

Answer: reflex

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

3.Classify an angle of 162°.

Answer: obtuse

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

4.Classify an angle of 229°.

Answer: reflex

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

5.Classify an angle of 239°.

Answer: reflex

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

6.Classify an angle of 165°.

Answer: obtuse

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

7.Classify an angle of 73°.

Answer: acute

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

8.Classify an angle of 102°.

Answer: obtuse

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

9.Classify an angle of 94°.

Answer: obtuse

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

10.Classify an angle of 200°.

Answer: reflex

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

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