2. Which of the angles in Question 1 on page 168 is a right angle?


3. A square has four right angles. How many right angles does a rectangle have?


How to Make a Paper Right Angle Now your teacher will show you how to make your own right angle from paper.


Measuring Right Angles


4. Use your paper right angle to measure the following angles and write whether each angle is more than a right angle, less than a right angle or a right angle.


a)


b)


c)


d)


5. Working in pairs and using your paper right angles, fi nd angles around your classroom and fi ll in this grid.


Angles that are right angles


E.g. Corner of the door 1. 2. 3.


Angles that are more than right angles


E.g. Top of coat hanger 1. 2. 3.


Angles that are less than right angles


E.g. Stand for webcam 1. 2. 3. 6. How many right angles does each of the following 2-D and 3-D shapes have?


a)


b)


c)


d) Lines and Angles 169


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