Year 8 Angles Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 8 angles worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · AnglesYear 8 Angles Worksheet — Level 2 — Practice Set 4 — Answers
State the angle rule you use.
1.Two angles on a straight line are 59° and x°. Find x.
Answer: x = 121
- Angles on a straight line add to 180°
- x = 180 − 59 = 121
2.Two angles of a triangle are 44° and 93°. Find the third angle.
Answer: 43°
- Angles in a triangle add to 180°
- 180 − 44 − 93 = 43
3.Two angles of a triangle are 46° and 88°. Find the third angle.
Answer: 46°
- Angles in a triangle add to 180°
- 180 − 46 − 88 = 46
4.Two angles of a triangle are 116° and 50°. Find the third angle.
Answer: 14°
- Angles in a triangle add to 180°
- 180 − 116 − 50 = 14
5.Two angles of a triangle are 99° and 115°. Find the third angle.
Answer: -34°
- Angles in a triangle add to 180°
- 180 − 99 − 115 = -34
6.Two angles of a triangle are 24° and 36°. Find the third angle.
Answer: 120°
- Angles in a triangle add to 180°
- 180 − 24 − 36 = 120
7.Two angles on a straight line are 120° and x°. Find x.
Answer: x = 60
- Angles on a straight line add to 180°
- x = 180 − 120 = 60
8.Two angles of a triangle are 110° and 43°. Find the third angle.
Answer: 27°
- Angles in a triangle add to 180°
- 180 − 110 − 43 = 27
9.Two angles of a triangle are 77° and 31°. Find the third angle.
Answer: 72°
- Angles in a triangle add to 180°
- 180 − 77 − 31 = 72
10.Two angles on a straight line are 38° and x°. Find x.
Answer: x = 142
- Angles on a straight line add to 180°
- x = 180 − 38 = 142
Marking tips
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