5th Grade Angles Worksheet — Level 3 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 5th Grade angles worksheet.
Success TutoringWorksheetsAnswer sheet5th Grade · Mathematics · Angles5th Grade Angles Worksheet — Level 3 — Practice Set 3 — Answers
State the angle rule you use.
1.Two angles on a straight line are 80° and x°. Find x.
Answer: x = 100
- Angles on a straight line add to 180°
- x = 180 − 80 = 100
2.Three angles meet at a point: 109°, 58° and x°. Find x.
Answer: x = 193
- Angles at a point add to 360°
- x = 360 − 109 − 58 = 193
3.Two angles of a triangle are 110° and 22°. Find the third angle.
Answer: 48°
- Angles in a triangle add to 180°
- 180 − 110 − 22 = 48
4.Two angles of a triangle are 98° and 59°. Find the third angle.
Answer: 23°
- Angles in a triangle add to 180°
- 180 − 98 − 59 = 23
5.Three angles meet at a point: 89°, 114° and x°. Find x.
Answer: x = 157
- Angles at a point add to 360°
- x = 360 − 89 − 114 = 157
6.An isosceles triangle has an apex angle of 46°. Find each base angle.
Answer: 67°
- Base angles are equal: (180 − 46) ÷ 2
- = 134 ÷ 2 = 67
7.Two angles of a triangle are 100° and 46°. Find the third angle.
Answer: 34°
- Angles in a triangle add to 180°
- 180 − 100 − 46 = 34
8.Two angles of a triangle are 88° and 44°. Find the third angle.
Answer: 48°
- Angles in a triangle add to 180°
- 180 − 88 − 44 = 48
9.Three angles meet at a point: 156°, 103° and x°. Find x.
Answer: x = 101
- Angles at a point add to 360°
- x = 360 − 156 − 103 = 101
10.Three angles meet at a point: 140°, 96° and x°. Find x.
Answer: x = 124
- Angles at a point add to 360°
- x = 360 − 140 − 96 = 124
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