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 120°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
- 2.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
- 3.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
- 4.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
- 5.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
- 6.Two angles of a triangle are 65° and 30°. What is the third angle (in degrees)?
- 7.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
- 8.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
- 9.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
- 10.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
- 11.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
- 12.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
- 13.Two angles of a triangle are 30° and 140°. What is the third angle (in degrees)?
- 14.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
- 15.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
- 16.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
- 17.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
- 18.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
- 19.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
- 20.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
- 21.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
- 22.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
- 23.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
- 24.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
- 25.Two angles of a triangle are 45° and 35°. What is the third angle (in degrees)?
- 26.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
- 27.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
- 28.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
- 29.An angle measures 20°. What kind of angle is it? (a) Acute (b) Straight (c) Right
- 30.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
- 31.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
- 32.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
- 33.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
- 34.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
- 35.Two angles of a triangle are 35° and 70°. What is the third angle (in degrees)?
- 36.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
- 37.Two angles of a triangle are 35° and 95°. What is the third angle (in degrees)?
- 38.Two angles of a triangle are 30° and 70°. What is the third angle (in degrees)?
- 39.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
- 40.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
Answer key
- Obtuse
- 200
- 35
- 25
- Straight
- 85
- 150
- 20
- 120
- 120
- 40
- 100
- 10
- Acute
- 55
- 25
- 70
- 30
- 85
- Right
- 150
- 60
- 100
- 80
- 100
- 75
- 70
- 60
- Acute
- 190
- 20
- 60
- 90
- 15
- 75
- 20
- 50
- 80
- 90
- 125
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