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Grade 4 · Worksheet
Angles
Angles on a straight line
- 1.
Angles on a straight line add up to how many degrees?
° - 2.
Three angles on a straight line are 55°, 80° and a°. What is a?
° - 3.
On a straight line there are angles of 25°, 30° and a°. What is a?
° - 4.
Angles on a straight line add up to 180°.
True False - 5.
Two angles sit on a straight line. One is 132°. What is the other angle?
° - 6.
Two angles sit on a straight line. One is 160°. What is the other angle?
° - 7.
Two angles sit on a straight line. One is 114°. What is the other angle?
° - 8.
Two angles sit on a straight line. One is 50°. What is the other angle?
° - 9.
Two angles sit on a straight line. One is 164°. What is the other angle?
° - 10.
Two angles sit on a straight line. One is 47°. What is the other angle?
° - 11.
Two angles sit on a straight line. One is 125°. What is the other angle?
° - 12.
Two angles sit on a straight line. One is 95°. What is the other angle?
° - 13.
Three angles on a straight line are 23°, 55° and c°. What is c?
° - 14.
How many degrees is a quarter turn?
° - 15.
What type of angle is 104°?
- AAcute
- BRight angle
- CObtuse
- 16.
How many degrees is a three-quarter turn?
° - 17.
How many degrees is a half turn?
° - 18.
Two angles sit on a straight line. One is 155°. What is the other angle?
° - 19.
Three angles on a straight line are 53°, 52° and c°. What is c?
° - 20.
Three angles on a straight line are 52°, 35° and c°. What is c?
°
Answer key
Angles — Angles on a straight line
- 1.180 °
- 2.45 °
- 3.125 °
- 4.True
- 5.48 °
- 6.20 °
- 7.66 °
- 8.130 °
- 9.16 °
- 10.133 °
- 11.55 °
- 12.85 °
- 13.102 °
- 14.90 °
- 15.C. Obtuse
- 16.270 °
- 17.180 °
- 18.25 °
- 19.75 °
- 20.93 °