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.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
- 2.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
- 3.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
- 4.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
- 5.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
- 6.An angle measures 15°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
- 7.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
- 8.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
- 9.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
- 10.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
- 11.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
- 12.An angle measures 125°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
- 13.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
- 14.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
- 15.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
- 16.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
- 17.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
- 18.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
- 19.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
- 20.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
- 21.Three angles meet at a point. Two of them are 140° and 80°. What is the third angle (in degrees)?
- 22.Two angles of a triangle are 40° and 90°. What is the third angle (in degrees)?
- 23.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
- 24.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
- 25.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
- 26.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
- 27.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
- 28.Two angles of a triangle are 85° and 70°. What is the third angle (in degrees)?
- 29.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
- 30.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
- 31.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
- 32.Two angles of a triangle are 30° and 65°. What is the third angle (in degrees)?
- 33.An angle measures 35°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
- 34.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
- 35.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
- 36.An angle measures 85°. What kind of angle is it? (a) Straight (b) Right (c) Acute
- 37.Two angles of a triangle are 85° and 50°. What is the third angle (in degrees)?
- 38.An angle measures 130°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
- 39.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
- 40.Two angles of a triangle are 35° and 100°. What is the third angle (in degrees)?
Answer key
- 30
- 110
- 150
- 180
- 60
- Acute
- 30
- 120
- Obtuse
- 15
- 170
- Obtuse
- 90
- 150
- 200
- 60
- Straight
- 120
- 60
- 45
- 140
- 50
- 75
- 75
- 210
- 55
- 30
- 25
- 90
- Right
- 135
- 85
- Acute
- 70
- 55
- Acute
- 45
- Obtuse
- 150
- 45
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