Page 91 - Mathematics Coursebook

8.2 Recognising line symmetry

5 Here are some road signs.
In part b the lines
a b c d e f
of symmetry are not
horizontal or vertical
but are diagonal, at
an angle, as shown.
g h i j k I

m n o p q r

Copy and complete the table to record their lines of symmetry.
Parts a and b have been done for you.

Type of line symmetry a b c d e f g h i j k l m n o p q r
Horizontal line of symmetry

Vertical line of symmetry
Diagonal line of symmetry
No lines of symmetry
6 In each diagram the dashed blue lines are lines of symmetry.
Copy and complete each diagram.
a b c

7 Copy these patterns onto squared paper.
i ii iii iv

a Add one blue square to each pattern to make a new pattern that has a line of symmetry.
b Draw the line of symmetry onto each of your patterns.
c Write down whether each line of symmetry is a horizontal, vertical or diagonal line of symmetry.

8 Sofi has a box of tiles.

All the tiles have the same pattern.
This is what one of the tiles looks like.

Sofi uses four of the tiles to make a square pattern that has four lines of symmetry.
Draw two different patterns that Sofi could make.

90 8 Symmetry