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4. Complete the following patterns.

(a) 20, 70, 120, 170, ____, ____, ____ (b) 101, 111, 121, 131, ____, ____, ____

(c) Abc, Bcd, Cde, ____, ____, ____ (d) 1045, 1055, 1065, ____, ____, ____

5. Draw the part that is growing in the following pattern in your notebook.

6.

(a) How many colours are used to create the pattern?
(b) How many shapes are used to create the pattern?

(c) Create your own pattern using the same shape with four colours in your notebook.

Tiling PaTTerns (TessellaTion)

Look at the patterns shown by the tiles of walls and floors below.

Knowledge Desk

Tesselations were first found in
the Sumerian civilization (4,000
B.C.). The word tessellation
These patterns are made by using shapes that fit comes from the Latin word
into each other. These types of patterns are called 'tessella', which means small.
Tessellation.

Quick Check
Colour to create a pattern using red, blue, green and yellow
colours according to the following sequence. Outer square and
inner square: clockwise pattern (RBGY).

Middle square: anticlockwise pattern (RBGY).

Life Skills
Make a beautiful pattern on a diya and decorate it.

142 Mathematics-3