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THE MAGIC OF NATURE POEM WRITTEN BY SAFALYA PAL

THE MAGIC OF NATURE THE MAGIC OF NATURE OUR WONDER DOES GROW THE SECRETS OF NATURE ARE NOT FOR THE HUMANS TO KNOW THE MAGIC OF NATURE IS FOR ALL TO SEE IT IS ALL AROUND YOU AND ALL AROUND ME THE BEUTIFUL SCENIC VIEW EVERYTHING SEEMS AWESOME AND NEW LOOKING AT THE AWESOME SIGHT YOU FEEL SO TRANQUIL AND DELIGHT THINK HOW THE LUSH FORESTS ALWAYS REMAIN GREEN THINK WHY THE WATER DOESN’T ACCOMPLISH THINK HOW THE NORTHERN LIGHTS ESTABLISH THINK FROM WHERE DO WE GET NATURAL THINGS WE GET ALL THESE FROM THE NATURE AND THOSE ARE POSSIBLE FOR NATURE’S MAGIC! THE NATURAL BEAUTY OF NATURE HAS SO MUCH TO SAY, THE BEAUTIFUL CROSSROADS AND LONG WAY, THE NATURE HAS ITS CHARM, KEEP IT SAFE AND DO NOT HARM, THE NATURE WILL KEEP US UNSAFE, IF WE DON'T KEEP IT SAFE!                                               - SAFALYA PAL
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Symmetry, NCERT NOTES, Class 6

 

Symmetry
Introduction to Symmetry

When figures have equally balanced proportions, they are said to be symmetrical.

Bilateral symmetry
If a figure is divided into two halves by only one line and these halves overlap each other completely, then the figure is said to have bilateral symmetry.
Example: A butterfly shows bilateral symmetry.

Line symmetry
A figure has line symmetry if a line can be drawn dividing the figure into two symmetrical parts. The line is called a line of symmetry.
Example: The dotted lines in the following figures show line symmetry.

 
Lines of symmetry
A figure can have any number of lines of symmetry passing through it. Some can have one, two or even multiple lines of symmetry. 
Example of single line of symmetry: A door lock.

Example of two lines of symmetry: A rectangle.

Example of multiple lines of symmetry (two or more): An equilateral triangle.
Reflection symmetry
Reflection symmetry is very similar to line symmetry except for the change in orientation.

For example, when you view yourself in the mirror, your right hand becomes the left hand in the mirror.

 
Point symmetry
Point symmetry exists when a figure is drawn around a single central point.
It is for figures having a point through which a symmetry can be established. This point is called centre of symmetry.
For example, hour glass shows point symmetry.

Kaleidoscope

A kaleidoscope uses mirrors to produce images that have several lines of symmetry.

Usually, two mirror strips forming a V-shape are used.
The angle between the mirrors determines number of lines of symmetry.
The figure below shows pattern formed by a kaleidoscope.

  
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