Year 7 Angles Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 7 angles worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · AnglesYear 7 Angles Worksheet — Level 2 — Practice Set 4 — Answers
State the angle rule you use.
1.Two angles on a straight line are 77° and x°. Find x.
Answer: x = 103
- Angles on a straight line add to 180°
- x = 180 − 77 = 103
2.Two angles of a triangle are 68° and 55°. Find the third angle.
Answer: 57°
- Angles in a triangle add to 180°
- 180 − 68 − 55 = 57
3.Two angles on a straight line are 93° and x°. Find x.
Answer: x = 87
- Angles on a straight line add to 180°
- x = 180 − 93 = 87
4.Two angles of a triangle are 60° and 22°. Find the third angle.
Answer: 98°
- Angles in a triangle add to 180°
- 180 − 60 − 22 = 98
5.Two angles on a straight line are 83° and x°. Find x.
Answer: x = 97
- Angles on a straight line add to 180°
- x = 180 − 83 = 97
6.Two angles on a straight line are 24° and x°. Find x.
Answer: x = 156
- Angles on a straight line add to 180°
- x = 180 − 24 = 156
7.Two angles on a straight line are 146° and x°. Find x.
Answer: x = 34
- Angles on a straight line add to 180°
- x = 180 − 146 = 34
8.Two angles of a triangle are 54° and 27°. Find the third angle.
Answer: 99°
- Angles in a triangle add to 180°
- 180 − 54 − 27 = 99
9.Two angles on a straight line are 148° and x°. Find x.
Answer: x = 32
- Angles on a straight line add to 180°
- x = 180 − 148 = 32
10.Two angles on a straight line are 111° and x°. Find x.
Answer: x = 69
- Angles on a straight line add to 180°
- x = 180 − 111 = 69
Marking tips
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