Year 5 Angles Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 5 angles worksheet.
Year 5 · Mathematics · Angles
Year 5 Angles Worksheet — Level 2 — Answers
Success Tutoring
State the angle rule you use.
1.Two angles of a triangle are 116° and 43°. Find the third angle.
Answer: 21°
- Angles in a triangle add to 180°
- 180 − 116 − 43 = 21
2.Two angles on a straight line are 116° and x°. Find x.
Answer: x = 64
- Angles on a straight line add to 180°
- x = 180 − 116 = 64
3.Two angles on a straight line are 152° and x°. Find x.
Answer: x = 28
- Angles on a straight line add to 180°
- x = 180 − 152 = 28
4.Two angles on a straight line are 76° and x°. Find x.
Answer: x = 104
- Angles on a straight line add to 180°
- x = 180 − 76 = 104
5.Two angles of a triangle are 37° and 60°. Find the third angle.
Answer: 83°
- Angles in a triangle add to 180°
- 180 − 37 − 60 = 83
6.Two angles on a straight line are 65° and x°. Find x.
Answer: x = 115
- Angles on a straight line add to 180°
- x = 180 − 65 = 115
7.Two angles on a straight line are 84° and x°. Find x.
Answer: x = 96
- Angles on a straight line add to 180°
- x = 180 − 84 = 96
8.Two angles of a triangle are 105° and 96°. Find the third angle.
Answer: -21°
- Angles in a triangle add to 180°
- 180 − 105 − 96 = -21
9.Two angles on a straight line are 100° and x°. Find x.
Answer: x = 80
- Angles on a straight line add to 180°
- x = 180 − 100 = 80
10.Two angles of a triangle are 79° and 41°. Find the third angle.
Answer: 60°
- Angles in a triangle add to 180°
- 180 − 79 − 41 = 60
Marking tips
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