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9 Symmetry

Learning Objectives
After studying this chapter, students will be able to... Scan to learn
 identify symmetrical objects
 define the line of symmetry
 draw the lines of symmetry in given objects, geometrical shapes etc.
 correlate reflection with symmetry
 understand rotational symmetry, the centre of rotation, and the angle of rotational symmetry
 understand and identify tesselation and regular tile patterns

get ready!

The teacher shows an image of a grand temple on the projector and talks about it in the class.

Students, look at this
image and recognise it. I know! This is the
Arunachaleswara temple,
Tiruvannamalai, Tamil Nadu.
I went there in the summer
vacation this year. People say that
it’s over 1000 years old and the
temple hall has 1000 pillars.

Symmetrical?
What is meant
by it?

Yes, ma’am. I also visited that
temple last year. I noticed that
the temple is symmetrical.

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