year 8 maths

384 Chapter 6 Angle relationships and properties of geometrical figures 1
Example 9
3 Give the number of lines of symmetry and the order of rotational symmetry for each shape.
a b c
d e f
4 Name a type of triangle that has the following properties.
a three lines of symmetry and order of rotational symmetry 3
b one line of symmetry and no rotational symmetry
c no line or rotational symmetry
5 List the quadrilaterals that have these properties.
a number of lines of symmetry
i 1 ii 2 iii 3 iv 4
b order of rotational symmetry
i 1 ii 2 iii 3 iv 4
6 State the number of lines of symmetry and order of rotational symmetry for each of the following.
a b c d
7 Of the capital letters of the alphabet shown here, state which have:
a 1 line of symmetry A B C D E F G H I J K L M
b 2 lines of symmetry N O P Q R S T U V W X Y Z
c rotational symmetry of order 2
8 Complete the other half of these shapes for the given axis of symmetry.
a b c
PROBLEM-SOLVING AND REASONING
9, 11 9–11
10–12
9 Draw the following shapes, if possible.
a a quadrilateral with no lines of symmetry
b a hexagon with one line of symmetry
c a shape with seven lines of symmetry and rotational symmetry of order 7
d a diagram with no line of symmetry but rotational symmetry of order 3
e a diagram with one line of symmetry and no rotational symmetry
Cambridge Maths NSW
Stage 4 Year 8 Second edition
ISBN 978-1-108-46627-1 © Palmer et al. 2018
Cambridge University Press
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