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4th Grade Angles Worksheet — Level 1 — Practice Set 3 — Answers

Answer sheet with worked solutions for the 4th Grade angles worksheet.

Success TutoringWorksheetsAnswer sheet4th Grade · Mathematics · Angles

4th Grade Angles Worksheet — Level 1 — Practice Set 3 — Answers

State the angle rule you use.

1.Classify an angle of 143°.

Answer: obtuse

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

2.Classify an angle of 55°.

Answer: acute

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

3.Classify an angle of 88°.

Answer: acute

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

4.Classify an angle of 206°.

Answer: reflex

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

5.Classify an angle of 201°.

Answer: reflex

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

6.Classify an angle of 46°.

Answer: acute

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

7.Classify an angle of 31°.

Answer: acute

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

8.Classify an angle of 113°.

Answer: obtuse

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

9.Classify an angle of 249°.

Answer: reflex

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

10.Classify an angle of 217°.

Answer: reflex

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

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