a)


b)


c)


d)


e)


f)


2.


a) Write the time that it is now b) Are the hands of a clock more than, less than or equal to a right angle at this time?


With a partner, try making the following angles. 3. Open a book a certain amount to make a right angle.


4. Stand up and shape your arms to make a right angle. 5. Stand up and shape your legs to make a right angle. 6. Stand up and shape your body to make a right angle.


7. Join your elbows and hands together so that your arms are parallel from the elbow down.


a) Keeping your elbows joined, move one arm to make an angle that is less than a right angle.


b) Keeping your elbows joined, move one arm to make an angle that is more than a right angle.


c) Keeping your elbows joined, move one arm to make an angle that is a right angle.


Maths Trail


Spend fi ve minutes with a partner looking at any object or structure in your school yard. Take turns fi nding as many horizontal, vertical and parallel lines as you can. See if you can point out all of the right angles too!


Can you think of somebody who might be


concerned about lines and angles in their job?


Lines and Angles


171


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