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.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
- 2.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
- 3.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
- 4.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
- 5.An angle measures 50°. What kind of angle is it? (a) Straight (b) Right (c) Acute
- 6.Two angles of a triangle are 30° and 60°. What is the third angle (in degrees)?
- 7.Two angles of a triangle are 70° and 85°. What is the third angle (in degrees)?
- 8.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
- 9.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
- 10.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
- 11.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
- 12.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
- 13.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
- 14.Two angles of a triangle are 40° and 55°. What is the third angle (in degrees)?
- 15.Two angles of a triangle are 90° and 80°. What is the third angle (in degrees)?
- 16.Two angles of a triangle are 65° and 60°. What is the third angle (in degrees)?
- 17.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
- 18.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
- 19.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
- 20.Two angles of a triangle are 70° and 95°. What is the third angle (in degrees)?
- 21.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
- 22.Two angles of a triangle are 70° and 105°. What is the third angle (in degrees)?
- 23.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
- 24.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
- 25.An angle measures 10°. What kind of angle is it? (a) Right (b) Straight (c) Acute
- 26.Two angles of a triangle are 60° and 75°. What is the third angle (in degrees)?
- 27.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
- 28.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
- 29.Two angles of a triangle are 55° and 105°. What is the third angle (in degrees)?
- 30.Two angles of a triangle are 35° and 85°. What is the third angle (in degrees)?
- 31.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
- 32.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
- 33.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
- 34.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
- 35.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
- 36.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
- 37.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
- 38.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
- 39.An angle measures 35°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
- 40.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
Answer key
- 90
- Acute
- 55
- 35
- Acute
- 90
- 25
- 120
- 60
- Obtuse
- 230
- 120
- 60
- 85
- 10
- 55
- 190
- 35
- 90
- 15
- 10
- 5
- 140
- 20
- Acute
- 45
- 65
- Right
- 20
- 60
- 90
- 130
- 110
- 130
- 70
- 60
- 85
- 30
- Acute
- 70
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