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 110° and 70°. What is the third angle (in degrees)?
- 2.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
- 3.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
- 4.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
- 5.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
- 6.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
- 7.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
- 8.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
- 9.Two angles of a triangle are 95° and 35°. What is the third angle (in degrees)?
- 10.Two angles of a triangle are 30° and 35°. What is the third angle (in degrees)?
- 11.An angle measures 125°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
- 12.Two angles of a triangle are 40° and 80°. What is the third angle (in degrees)?
- 13.Two angles of a triangle are 35° and 130°. What is the third angle (in degrees)?
- 14.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
- 15.Two angles of a triangle are 70° and 105°. What is the third angle (in degrees)?
- 16.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
- 17.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
- 18.Two angles of a triangle are 35° and 100°. What is the third angle (in degrees)?
- 19.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
- 20.Two angles of a triangle are 50° and 35°. What is the third angle (in degrees)?
- 21.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
- 22.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Straight
- 23.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
- 24.An angle measures 130°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
- 25.Two angles of a triangle are 50° and 95°. What is the third angle (in degrees)?
- 26.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
- 27.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
- 28.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
- 29.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
- 30.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
- 31.An angle measures 30°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
- 32.Two angles of a triangle are 35° and 85°. What is the third angle (in degrees)?
- 33.Two angles of a triangle are 50° and 120°. What is the third angle (in degrees)?
- 34.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
- 35.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
- 36.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
- 37.Two angles of a triangle are 20° and 115°. What is the third angle (in degrees)?
- 38.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
- 39.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
- 40.An angle measures 45°. What kind of angle is it? (a) Straight (b) Acute (c) Right
Answer key
- 180
- Straight
- 50
- 145
- 30
- 160
- 260
- 30
- 50
- 115
- Obtuse
- 60
- 15
- Obtuse
- 5
- 160
- 110
- 45
- 90
- 95
- 30
- Right
- 30
- Obtuse
- 35
- 190
- 200
- 170
- 65
- 55
- Acute
- 60
- 10
- 45
- 60
- 80
- 45
- 90
- 55
- Acute
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