6th Grade Angles Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 6th Grade angles worksheet.
6th Grade Angles Worksheet — Level 2 — Practice Set 2 — Answers
State the angle rule you use.
1.Two angles of a triangle are 24° and 104°. Find the third angle.
Answer: 52°
- Angles in a triangle add to 180°
- 180 − 24 − 104 = 52
2.Two angles of a triangle are 81° and 87°. Find the third angle.
Answer: 12°
- Angles in a triangle add to 180°
- 180 − 81 − 87 = 12
3.Two angles on a straight line are 65° and x°. Find x.
Answer: x = 115
- Angles on a straight line add to 180°
- x = 180 − 65 = 115
4.Two angles of a triangle are 20° and 118°. Find the third angle.
Answer: 42°
- Angles in a triangle add to 180°
- 180 − 20 − 118 = 42
5.Two angles on a straight line are 72° and x°. Find x.
Answer: x = 108
- Angles on a straight line add to 180°
- x = 180 − 72 = 108
6.Two angles on a straight line are 154° and x°. Find x.
Answer: x = 26
- Angles on a straight line add to 180°
- x = 180 − 154 = 26
7.Two angles of a triangle are 85° and 73°. Find the third angle.
Answer: 22°
- Angles in a triangle add to 180°
- 180 − 85 − 73 = 22
8.Two angles of a triangle are 70° and 45°. Find the third angle.
Answer: 65°
- Angles in a triangle add to 180°
- 180 − 70 − 45 = 65
9.Two angles on a straight line are 112° and x°. Find x.
Answer: x = 68
- Angles on a straight line add to 180°
- x = 180 − 112 = 68
10.Two angles of a triangle are 39° and 27°. Find the third angle.
Answer: 114°
- Angles in a triangle add to 180°
- 180 − 39 − 27 = 114
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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