Page 123 - Maths Skill - 3

Patterns and Symmetry 121

(c) 18, 16, 14, 12, ______, ______, ______, ______, ______, ______

(d) 51, 49, 47, 45, ______, ______, ______, ______, ______, ______

(e) 3, 6, 9, 12, ______, ______, ______, ______, ______, ______

2. Find the pattern, and fill in the empty spaces in each of the following.

(a) 300, 400, _________, 600, _________, 800, 900

(b) 222, 225, _________, 231, _________, 237, 240

(c) 118, _________, 128, 133, _________, 143, 148

Tiling

Look at the given picture carefully.
You may observe the beautiful patterns on walls and floor.

These are similar geometrical shapes placed without any
gap. This is called tiling. Each piece of geometrical shape
is called a tile.

Some examples of tiling are given below.

Triangle

Challenge
Square I’m a shape with perfact balance,
Reflective beauty is my talent.
Fold me in half, and what do you
see?
Two halves alike, in perfect way.
Rectangle What am I?

Exercise 9.3

1. Colour the following tiles in different colours to make patterns.

(a) (b)