There are four figures shown below. Identify the symmetrical ones.
1
2
3
4
Figures 1 and 4 are symmetrical because they have line symmetry. Figures 2 and 3 do not have line symmetry and hence are not symmetrical.
(a) A piece of paper is folded as shown below. How many symmetrical figures are possible after unfolding figure no. 3? [4 MARKS]
(b) How many lines of symmetry are possible for this figure?
[4 MARKS]