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.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
- 2.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
- 3.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
- 4.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
- 5.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
- 6.Three angles meet at a point. Two of them are 150° and 80°. What is the third angle (in degrees)?
- 7.Two angles of a triangle are 25° and 130°. What is the third angle (in degrees)?
- 8.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
- 9.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
- 10.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
- 11.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
- 12.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
- 13.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
- 14.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
- 15.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
- 16.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
- 17.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
- 18.Two angles of a triangle are 85° and 30°. What is the third angle (in degrees)?
- 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
- 20.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
- 21.Two angles of a triangle are 30° and 75°. What is the third angle (in degrees)?
- 22.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
- 23.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
- 24.Two angles of a triangle are 50° and 50°. 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 110° and 50°. What is the third angle (in degrees)?
- 27.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
- 28.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
- 29.An angle measures 80°. What kind of angle is it? (a) Acute (b) Straight (c) Right
- 30.Two angles of a triangle are 80° and 55°. What is the third angle (in degrees)?
- 31.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
- 32.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
- 33.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
- 34.An angle measures 40°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
- 35.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
- 36.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
- 37.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
- 38.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
- 39.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
- 40.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
Answer key
- 70
- 5
- 65
- Straight
- 65
- 130
- 25
- 150
- 120
- 165
- 170
- 40
- 60
- 30
- 20
- 95
- 90
- 65
- 60
- 30
- 75
- 155
- 160
- 80
- Right
- 200
- 160
- 10
- Acute
- 45
- 50
- 90
- 85
- Acute
- 140
- 60
- 5
- 115
- 105
- 150
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