Find and draw some other road signs you know and mark all of the angles on each.


8. Have a look at the following clock faces. What angles are being made by the hands of each clock? Is there more than 1 angle being made? a)


b) c)


d)


e)


f)


9. Name the angle in each of the following (acute, right, obtuse, straight, refl ex angle or full rotation).


a) 25° g) 360°


b) 130° h) 72°


c) 90° i) 195°


d) 290° j) 180°


11. Use a clock to help you represent the following angles. a) acute angle


b) right angle


e) 150° k) 110°


f) 5° l) 58° 10. Pick 5 of the angles in question 9 and draw what you think they might look like. c) obtuse angle d) refl ex angle


12. If there are 360°in a full rotation, 180°in a half rotation and 90°in a quarter rotation, through how many degrees does the hour hand on a clock turn, going clockwise, in the following? (Use a clock to help you or draw the times on clock faces.)


a) 12 o’clock to 3 o’clock c) 1 o’clock to 7 o’clock e) 9 o’clock to 12 o’clock


– 4 of a full rotation


– 4 of a full rotation


e) 1 __


12 of a full rotation


b) 1 d) 1 f) 1


b) 3 o’clock to 9 o’clock d) 12 o’clock to 12 o’clock f) 5 o’clock to 8 o’clock


13. Calculate how many degrees are in each of the following. a) 1 c) 3


– 2 of a full rotation


– 3 of a full rotation


– 8 of a full rotation


Remember: 360° = a full rotation


Lines and Angles 39


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