7th Grade Angles Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 7th Grade angles worksheet.
Success TutoringWorksheetsAnswer sheet7th Grade · Mathematics · Angles7th Grade Angles Worksheet — Level 2 — Practice Set 2 — Answers
State the angle rule you use.
1.Two angles of a triangle are 37° and 117°. Find the third angle.
Answer: 26°
- Angles in a triangle add to 180°
- 180 − 37 − 117 = 26
2.Two angles on a straight line are 132° and x°. Find x.
Answer: x = 48
- Angles on a straight line add to 180°
- x = 180 − 132 = 48
3.Two angles of a triangle are 103° and 26°. Find the third angle.
Answer: 51°
- Angles in a triangle add to 180°
- 180 − 103 − 26 = 51
4.Two angles on a straight line are 157° and x°. Find x.
Answer: x = 23
- Angles on a straight line add to 180°
- x = 180 − 157 = 23
5.Two angles on a straight line are 131° and x°. Find x.
Answer: x = 49
- Angles on a straight line add to 180°
- x = 180 − 131 = 49
6.Two angles of a triangle are 97° and 83°. Find the third angle.
Answer: 0°
- Angles in a triangle add to 180°
- 180 − 97 − 83 = 0
7.Two angles of a triangle are 120° and 97°. Find the third angle.
Answer: -37°
- Angles in a triangle add to 180°
- 180 − 120 − 97 = -37
8.Two angles of a triangle are 39° and 96°. Find the third angle.
Answer: 45°
- Angles in a triangle add to 180°
- 180 − 39 − 96 = 45
9.Two angles of a triangle are 97° and 33°. Find the third angle.
Answer: 50°
- Angles in a triangle add to 180°
- 180 − 97 − 33 = 50
10.Two angles of a triangle are 79° and 112°. Find the third angle.
Answer: -11°
- Angles in a triangle add to 180°
- 180 − 79 − 112 = -11
Marking tips
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