Year 7 Angles Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 7 angles worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · AnglesYear 7 Angles Worksheet — Level 2 — Answers
State the angle rule you use.
1.Two angles of a triangle are 79° and 48°. Find the third angle.
Answer: 53°
- Angles in a triangle add to 180°
- 180 − 79 − 48 = 53
2.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
3.Two angles of a triangle are 58° and 21°. Find the third angle.
Answer: 101°
- Angles in a triangle add to 180°
- 180 − 58 − 21 = 101
4.Two angles of a triangle are 27° and 101°. Find the third angle.
Answer: 52°
- Angles in a triangle add to 180°
- 180 − 27 − 101 = 52
5.Two angles of a triangle are 69° and 40°. Find the third angle.
Answer: 71°
- Angles in a triangle add to 180°
- 180 − 69 − 40 = 71
6.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
7.Two angles of a triangle are 113° and 71°. Find the third angle.
Answer: -4°
- Angles in a triangle add to 180°
- 180 − 113 − 71 = -4
8.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
9.Two angles on a straight line are 155° and x°. Find x.
Answer: x = 25
- Angles on a straight line add to 180°
- x = 180 − 155 = 25
10.Two angles of a triangle are 97° and 32°. Find the third angle.
Answer: 51°
- Angles in a triangle add to 180°
- 180 − 97 − 32 = 51
Marking tips
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