8th Grade Angles Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
State the angle rule you use.
1.Two angles on a straight line are 117° and x°. Find x.
Answer: x = 63
- Angles on a straight line add to 180°
- x = 180 − 117 = 63
2.Two angles of a triangle are 76° and 95°. Find the third angle.
Answer: 9°
- Angles in a triangle add to 180°
- 180 − 76 − 95 = 9
3.Two angles of a triangle are 81° and 91°. Find the third angle.
Answer: 8°
- Angles in a triangle add to 180°
- 180 − 81 − 91 = 8
4.Two angles of a triangle are 40° and 85°. Find the third angle.
Answer: 55°
- Angles in a triangle add to 180°
- 180 − 40 − 85 = 55
5.Two angles on a straight line are 55° and x°. Find x.
Answer: x = 125
- Angles on a straight line add to 180°
- x = 180 − 55 = 125
6.Two angles on a straight line are 79° and x°. Find x.
Answer: x = 101
- Angles on a straight line add to 180°
- x = 180 − 79 = 101
7.Two angles on a straight line are 135° and x°. Find x.
Answer: x = 45
- Angles on a straight line add to 180°
- x = 180 − 135 = 45
8.Two angles of a triangle are 24° and 107°. Find the third angle.
Answer: 49°
- Angles in a triangle add to 180°
- 180 − 24 − 107 = 49
9.Two angles on a straight line are 24° and x°. Find x.
Answer: x = 156
- Angles on a straight line add to 180°
- x = 180 − 24 = 156
10.Two angles on a straight line are 139° and x°. Find x.
Answer: x = 41
- Angles on a straight line add to 180°
- x = 180 − 139 = 41
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