sooz williams - ©2005 what is symmetry? ssssymmetry = same iiiif something has symmetry it is the...


What Is What Is Symmetry?Symmetry?

Symmetry = SameSymmetry = SameIf something has If something has symmetry it is the symmetry it is the SAME on both sidesSAME on both sides


For For Example:Example:A butterfly A butterfly

has has symmetry.symmetry.

If you draw a If you draw a line down the line down the center of a center of a butterfly, butterfly, both sides are both sides are the same!the same!


Some More Some More Examples:Examples:

Many kinds of Many kinds of food have food have symmetry!symmetry!

Many living Many living things have things have symmetry!symmetry!

Even people Even people have have

symmetry – symmetry – most of the most of the

time!time!


Sometimes, even very Sometimes, even very complicated things complicated things

have symmetry:have symmetry:

Like this building! It is Like this building! It is called Aston Hallcalled Aston Hall


the same!the same!The 2 sides are

The 2 sides are

symmetricasymmetrical!l!


When the line of When the line of symmetry goes up symmetry goes up

and down,and down,

It is called It is called VERTICALVERTICAL symmetrysymmetry


VERTICALVERTICAL

up and downup and down


Another kind of Another kind of symmetry is symmetry is HORIZONTALHORIZONTAL

symmetrysymmetry

HorizontalHorizontal means means across, or side to across, or side to

sideside


For Example:For Example:

Many common Many common objects have objects have

horizontal horizontal symmetry!symmetry!

This bow and This bow and arrow has arrow has horizontal horizontal

symmetry.!symmetry.!

This ladybug This ladybug has horizontal has horizontal

symmetrysymmetry


HORIZONTALHORIZONTAL

side to sideside to side


Sometimes, objects Sometimes, objects have have bothboth vertical vertical

and horizontal and horizontal symmetry:symmetry:

vertiverticalcal

AND AND horizontalhorizontal


Can you see the Can you see the symmetry in this symmetry in this

pattern?pattern?

This object has This object has twotwo lineslines of of symmetrysymmetry


Which of these Which of these patterns is patterns is

symmetrical?symmetrical?

Nope!Nope! Nope!Nope!Yes!Yes!(one line of symmetry)(one line of symmetry)


This pattern is This pattern is notnot symmetrical!symmetrical!

Which of these Which of these patterns is NOT patterns is NOT symmetrical?symmetrical?


Does this object have Does this object have verticalvertical symmetry or symmetry or horizontalhorizontal symmetry? symmetry?

BotBoth!h!

In fact, you In fact, you couldcould argue that argue that this object has 4 lines of this object has 4 lines of symmetry! (although not symmetry! (although not exactlyexactly))

Created by Sooz Williams - Created by Sooz Williams - ©2005©2005

Can you find Can you find symmetry in symmetry in

the world the world around you?around you?

Resources End Show


ReferencesReferences Houghton, John and Rod Birch. "Aston Hall History." Houghton, John and Rod Birch. "Aston Hall History."

Aston History HomepageAston History Homepage. 2002. 19 Apr 2005 . 2002. 19 Apr 2005 <http://www.astonbrook-through-astonmanor.co.uk/i<http://www.astonbrook-through-astonmanor.co.uk/id77.htm>. d77.htm>.

All other graphics courtesy of All other graphics courtesy of Microsoft Office Clip Art OnlineMicrosoft Office Clip Art Online

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