Page 188 - Maths Skills - 7
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186 Maths
REFLECTION SYMMETRY
Reflection symmetry is the extension of linear symmetry. Here, the object and its
image are symmetrical with reference to the mirror line.
For example, in Fig., the letter D when reflected through the mirror is shown as
We may notice that when an object is reflected:
Fact-o-meter
� There is no change in the dimensions of the object.
� There is no change in the angle.
� Reflection symmetry is also known as line symmetry.
� The mirror image is as far behind the mirror as the object is in front of the mirror.
Exercise 11.1
1. Which of the following figures are symmetrical?
(i) (ii) (iii) (iv) (v) (vi)
2. Draw the line/lines of symmetry for the following.
(i) (ii) (iii) (iv)
3. Complete the following figures using the given two lines of symmetry.
(i) (ii) (iii) (iv)
