Year 7 Angles Worksheet — Level 2 — Practice Set 2 — 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 2 — Answers
State the angle rule you use.
1.Two angles on a straight line are 87° and x°. Find x.
Answer: x = 93
- Angles on a straight line add to 180°
- x = 180 − 87 = 93
2.Two angles on a straight line are 144° and x°. Find x.
Answer: x = 36
- Angles on a straight line add to 180°
- x = 180 − 144 = 36
3.Two angles of a triangle are 28° and 106°. Find the third angle.
Answer: 46°
- Angles in a triangle add to 180°
- 180 − 28 − 106 = 46
4.Two angles of a triangle are 77° and 118°. Find the third angle.
Answer: -15°
- Angles in a triangle add to 180°
- 180 − 77 − 118 = -15
5.Two angles on a straight line are 125° and x°. Find x.
Answer: x = 55
- Angles on a straight line add to 180°
- x = 180 − 125 = 55
6.Two angles on a straight line are 34° and x°. Find x.
Answer: x = 146
- Angles on a straight line add to 180°
- x = 180 − 34 = 146
7.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
8.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
9.Two angles of a triangle are 105° and 115°. Find the third angle.
Answer: -40°
- Angles in a triangle add to 180°
- 180 − 105 − 115 = -40
10.Two angles on a straight line are 126° and x°. Find x.
Answer: x = 54
- Angles on a straight line add to 180°
- x = 180 − 126 = 54
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.