Class 5 Maths Worksheet: Angles
The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°. On a straight line: the two angles add up to 180°. In a triangle: the three angles add up to 180°. Around a point: 360°. Clock: each hour mark is 30° apart (360° ÷ 12).
NameDateTime takenScore ___ / 40
- 1.An angle measures 15°. What kind of angle is it? (a) Straight (b) Right (c) Acute
- 2.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
- 3.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
- 4.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
- 5.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
- 6.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
- 7.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
- 8.Two angles of a triangle are 55° and 95°. What is the third angle (in degrees)?
- 9.Three angles meet at a point. Two of them are 100° and 140°. What is the third angle (in degrees)?
- 10.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
- 11.An angle measures 150°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
- 12.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
- 13.Two angles of a triangle are 75° and 55°. What is the third angle (in degrees)?
- 14.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
- 15.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
- 16.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
- 17.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
- 18.Two angles of a triangle are 30° and 35°. What is the third angle (in degrees)?
- 19.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
- 20.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
- 21.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
- 22.Two angles of a triangle are 80° and 55°. What is the third angle (in degrees)?
- 23.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
- 24.Three angles meet at a point. Two of them are 120° and 100°. What is the third angle (in degrees)?
- 25.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
- 26.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
- 27.An angle measures 175°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
- 28.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
- 29.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
- 30.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
- 31.Two angles of a triangle are 20° and 70°. What is the third angle (in degrees)?
- 32.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
- 33.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
- 34.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
- 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
- 36.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
- 37.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
- 38.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
- 39.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
- 40.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
Answer key
- Acute
- 30
- 120
- 60
- 15
- 140
- 180
- 30
- 120
- 70
- Obtuse
- 120
- 50
- 90
- 170
- 105
- 75
- 115
- 120
- 180
- 220
- 45
- Straight
- 140
- Right
- 60
- Obtuse
- 110
- 75
- 10
- 90
- 80
- 160
- 60
- 30
- 40
- 150
- 160
- 65
- 20
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