6th Grade Angles Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 6th Grade angles worksheet.
6th Grade Angles Worksheet — Level 2 — Practice Set 4 — Answers
State the angle rule you use.
1.Two angles on a straight line are 124° and x°. Find x.
Answer: x = 56
- Angles on a straight line add to 180°
- x = 180 − 124 = 56
2.Two angles on a straight line are 129° and x°. Find x.
Answer: x = 51
- Angles on a straight line add to 180°
- x = 180 − 129 = 51
3.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
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 111° and 61°. Find the third angle.
Answer: 8°
- Angles in a triangle add to 180°
- 180 − 111 − 61 = 8
6.Two angles of a triangle are 32° and 52°. Find the third angle.
Answer: 96°
- Angles in a triangle add to 180°
- 180 − 32 − 52 = 96
7.Two angles on a straight line are 45° and x°. Find x.
Answer: x = 135
- Angles on a straight line add to 180°
- x = 180 − 45 = 135
8.Two angles on a straight line are 103° and x°. Find x.
Answer: x = 77
- Angles on a straight line add to 180°
- x = 180 − 103 = 77
9.Two angles on a straight line are 52° and x°. Find x.
Answer: x = 128
- Angles on a straight line add to 180°
- x = 180 − 52 = 128
10.Two angles of a triangle are 86° and 64°. Find the third angle.
Answer: 30°
- Angles in a triangle add to 180°
- 180 − 86 − 64 = 30
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.
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