5th Grade Angles Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 5th Grade angles worksheet.
Success TutoringWorksheetsAnswer sheet5th Grade · Mathematics · Angles5th Grade Angles Worksheet — Level 2 — Practice Set 4 — Answers
State the angle rule you use.
1.Two angles on a straight line are 150° and x°. Find x.
Answer: x = 30
- Angles on a straight line add to 180°
- x = 180 − 150 = 30
2.Two angles on a straight line are 21° and x°. Find x.
Answer: x = 159
- Angles on a straight line add to 180°
- x = 180 − 21 = 159
3.Two angles of a triangle are 108° and 48°. Find the third angle.
Answer: 24°
- Angles in a triangle add to 180°
- 180 − 108 − 48 = 24
4.Two angles on a straight line are 82° and x°. Find x.
Answer: x = 98
- Angles on a straight line add to 180°
- x = 180 − 82 = 98
5.Two angles of a triangle are 90° and 72°. Find the third angle.
Answer: 18°
- Angles in a triangle add to 180°
- 180 − 90 − 72 = 18
6.Two angles of a triangle are 68° and 27°. Find the third angle.
Answer: 85°
- Angles in a triangle add to 180°
- 180 − 68 − 27 = 85
7.Two angles on a straight line are 114° and x°. Find x.
Answer: x = 66
- Angles on a straight line add to 180°
- x = 180 − 114 = 66
8.Two angles on a straight line are 113° and x°. Find x.
Answer: x = 67
- Angles on a straight line add to 180°
- x = 180 − 113 = 67
9.Two angles of a triangle are 28° and 70°. Find the third angle.
Answer: 82°
- Angles in a triangle add to 180°
- 180 − 28 − 70 = 82
10.Two angles of a triangle are 77° and 112°. Find the third angle.
Answer: -9°
- Angles in a triangle add to 180°
- 180 − 77 − 112 = -9
Marking tips
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