Page 149 - Revised Maths Wisdom Class - 6

Symmetry 147
+
–
9 0 + –
0
9
(i) (j) (k) (l)
× ×
(m) (n) ÷ ÷ (o) = =

2. Complete the table given below.

Shape Is it symmetrical? Yes or No Number of lines of symmetry

(a)

(b)

(c)

(d)

(e)

VOCABULARY
VOCABULARY
Reflection Fold Halve Shades Symmetry

ACTIVITY TIME
ACTIVITY TIME

Objective: To find the number of lines of symmetry in a circle by paper folding.
Materials Required: Coloured paper, A pair of scissors, pencil, compasses.
Procedure:
1. Draw a circle on a coloured paper and cut it.

2. Fold the circle in such a way that the crease passes through the centre of the circle.
3. Observe that each half part of the circle overlaps the
other completely. Unfold to see the line of symmetry.
4. Keep folding the circle again and again along different
lines. By doing so, every time we obtain a new line of
symmetry passing through the centre.

Conclusion: This shows that a circle has infinite lines of symmetry.