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\\September 30, 2025 9:50 AM Bharat Arora P-9 Reader _________________________ Date: ___________________74

8 Symmetry and

Patterns

Learning Objectives
Learning Objectives
After studying this chapter, students will be able to...

� recognise the line(s) of symmetry in objects around us and in various geometrical figures
� recognise the mirror image or reflection
� learn and create patterns of figures and numbers
� make patterns based on multiples of 9 and know about casting out 9
� know the concept of tessellation
� perform the coding and decoding of messages

Holistic Skills
get reAdy! Discussion-Based Learning

Zoya and Imran are siblings. They visited the Taj Mahal with their parents.

Wow! How
beautiful it is.

It looks so beautiful because
of its symmetry. If you draw
a straight line from top to
bottom, right through its
middle, then both sides will be
mirror images of each other.

148 Mathematics-4