Page 103 - STEPS MATHEMATICS 4A

Symmetry puzzles mirror, 1 cm squared

paper or RM A

This shape has 2 axes of symmetry "V ^

a Draw more shapes using 9 squares ^>^
that have 2 axes of symmetry.

b Try again, this time
using 12 squares.
Record your findings.

Mark the axes o/ symmetry
on your drawings.

Cut out 2 shapes like this:
Fit the 2 shapes together
in different ways to make larger shapes
with 2 axes of symmetry.
c Try again, this time using 2 matching
shapes made from 8 squares.
Use a mirror to check.

BBS
o Place a mirror on this triangle
so that you can see:

a a large square
b a kite
c an isosceles triangle.

a Investigate other shapes you can make
by placing a mirror on the triangle.

b Draw some of the interesting ones.
Can your friend decide where you
placed the mirror to make these shapes?

CHALLENGE

• Use the shape in

• Investigate ways to place a mirror so that you
can see 1 square, 2 squares ... 18 squares.