Year 8 Angles Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
State the angle rule you use.
1.Two angles on a straight line are 32° and x°. Find x.
Answer: x = 148
- Angles on a straight line add to 180°
- x = 180 − 32 = 148
2.Two angles of a triangle are 33° and 46°. Find the third angle.
Answer: 101°
- Angles in a triangle add to 180°
- 180 − 33 − 46 = 101
3.Two angles on a straight line are 122° and x°. Find x.
Answer: x = 58
- Angles on a straight line add to 180°
- x = 180 − 122 = 58
4.Two angles on a straight line are 159° and x°. Find x.
Answer: x = 21
- Angles on a straight line add to 180°
- x = 180 − 159 = 21
5.Two angles of a triangle are 119° and 23°. Find the third angle.
Answer: 38°
- Angles in a triangle add to 180°
- 180 − 119 − 23 = 38
6.Two angles on a straight line are 35° and x°. Find x.
Answer: x = 145
- Angles on a straight line add to 180°
- x = 180 − 35 = 145
7.Two angles of a triangle are 64° and 78°. Find the third angle.
Answer: 38°
- Angles in a triangle add to 180°
- 180 − 64 − 78 = 38
8.Two angles on a straight line are 49° and x°. Find x.
Answer: x = 131
- Angles on a straight line add to 180°
- x = 180 − 49 = 131
9.Two angles of a triangle are 43° and 116°. Find the third angle.
Answer: 21°
- Angles in a triangle add to 180°
- 180 − 43 − 116 = 21
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
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