8th Grade Angles Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the 8th Grade angles worksheet.
Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Angles8th Grade Angles Worksheet — Level 2 — Answers
State the angle rule you use.
1.Two angles of a triangle are 30° and 58°. Find the third angle.
Answer: 92°
- Angles in a triangle add to 180°
- 180 − 30 − 58 = 92
2.Two angles of a triangle are 88° and 71°. Find the third angle.
Answer: 21°
- Angles in a triangle add to 180°
- 180 − 88 − 71 = 21
3.Two angles of a triangle are 107° and 114°. Find the third angle.
Answer: -41°
- Angles in a triangle add to 180°
- 180 − 107 − 114 = -41
4.Two angles on a straight line are 22° and x°. Find x.
Answer: x = 158
- Angles on a straight line add to 180°
- x = 180 − 22 = 158
5.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
6.Two angles of a triangle are 83° and 100°. Find the third angle.
Answer: -3°
- Angles in a triangle add to 180°
- 180 − 83 − 100 = -3
7.Two angles of a triangle are 89° and 117°. Find the third angle.
Answer: -26°
- Angles in a triangle add to 180°
- 180 − 89 − 117 = -26
8.Two angles of a triangle are 81° and 23°. Find the third angle.
Answer: 76°
- Angles in a triangle add to 180°
- 180 − 81 − 23 = 76
9.Two angles of a triangle are 74° and 116°. Find the third angle.
Answer: -10°
- Angles in a triangle add to 180°
- 180 − 74 − 116 = -10
10.Two angles of a triangle are 86° and 111°. Find the third angle.
Answer: -17°
- Angles in a triangle add to 180°
- 180 − 86 − 111 = -17
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