Page 169 - Math Skill - 4

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MIND MAP

Patterns and Symmetry

Pattern Symmetry

“Pattern is an arrangement of objects/ “It occurs when an object looks
numbers in which all members are exactly same on the both sides
related to each other by a specific rule”. of imaginary line”.

Object Patterns

Number Patterns Types LINES OF SYMMETRY IN
� Even number pattern ISOSCELES TRIANGLE
0, 2, 4, 6, 8 .........

� Odd number pattern
1, 3, 5, 7, 9 .........

� Skip counting by 5 LINES OF SYMMETRY IN 1-line of symmetry
5, 10, 15, 20 ......... EQUILATERAL TRIANGLE
� Skip counting by 10 LINES OF SYMMETRY IN
10, 20, 30, 40 ......... SCALENE TRIANGLE

The objects which are not
symmetrical are called as 3-lines of symmetry
asymmetrical objects
No-line of symmetry

Lines of Symmetry

in Circle Lines of Symmetry Lines of Symmetry
in Rectangle in Square

Infinite lines of symmetry 2-lines of symmetry 4-lines of symmetry