8th Grade Angles Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 8th Grade angles worksheet.
Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Angles8th Grade Angles Worksheet — Level 2 — Practice Set 4 — Answers
State the angle rule you use.
1.Two angles on a straight line are 85° and x°. Find x.
Answer: x = 95
- Angles on a straight line add to 180°
- x = 180 − 85 = 95
2.Two angles of a triangle are 76° and 83°. Find the third angle.
Answer: 21°
- Angles in a triangle add to 180°
- 180 − 76 − 83 = 21
3.Two angles of a triangle are 60° and 110°. Find the third angle.
Answer: 10°
- Angles in a triangle add to 180°
- 180 − 60 − 110 = 10
4.Two angles of a triangle are 76° and 103°. Find the third angle.
Answer: 1°
- Angles in a triangle add to 180°
- 180 − 76 − 103 = 1
5.Two angles on a straight line are 26° and x°. Find x.
Answer: x = 154
- Angles on a straight line add to 180°
- x = 180 − 26 = 154
6.Two angles on a straight line are 89° and x°. Find x.
Answer: x = 91
- Angles on a straight line add to 180°
- x = 180 − 89 = 91
7.Two angles on a straight line are 92° and x°. Find x.
Answer: x = 88
- Angles on a straight line add to 180°
- x = 180 − 92 = 88
8.Two angles on a straight line are 50° and x°. Find x.
Answer: x = 130
- Angles on a straight line add to 180°
- x = 180 − 50 = 130
9.Two angles of a triangle are 32° and 109°. Find the third angle.
Answer: 39°
- Angles in a triangle add to 180°
- 180 − 32 − 109 = 39
10.Two angles of a triangle are 86° and 27°. Find the third angle.
Answer: 67°
- Angles in a triangle add to 180°
- 180 − 86 − 27 = 67
Marking tips
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