Transcript Marleys Symmetry Project

Symmetry
By: Marley Poku-Kankam
Mr. Barbers Class
January 2012
(Happy New Year!!)
What are some types of symmetry?
 There are two types of symmetry that I will show in this PowerPoint:
radial symmetry (or rotational symmetry) and bilateral symmetry (or
line symmetry).
 Rotational symmetry is when you turn a figure to a certain degree
between 0 and 360 and it looks the same as it did before you turned
it.
 Line symmetry is when you fold a figure directly in half either
vertically or horizontally and both sides exactly match up after the
figure is folded.
Rotational Symmetry
in everyday
objects….
Rotational Symmetry
This is one of my little brothers’
footballs. This was found in my
den. My brothers play a lot of
football in the house especially
now since it’s playoff season!
(We had to rotate the picture a
bit to get the symmetry line
straight!)
Order = 2 Degree = 180
Rotational Symmetry
This is a sound maker that we used
on New Years Eve. We made a ton
of noise with these as we were
bringing in the new year!!
I found this in my den.
Order = 2
Degree = 180
Rotational Symmetry
This a candle in the shape of a
star. I found this in our cabinet
with candles. My mom loves,
loves, loves candles! The better
they smell, the more she loves
them!
Order = 5
Degree = 72
Rotational Symmetry
This is a coffee filter that we
use to make coffee. I found this
in my kitchen next to my coffee
maker. My mom and dad love
coffee. (My mom helped me
draw all of the arrows!)
Order = 24 Degree = 15
Rotational Symmetry
This is a candle. I found this in my
moms work area.
Order = Infinite Degree = 359
This shape is a little different
because every little bit you turn it,
it will be exactly the same as when
you started.
Line Symmetry
in everyday
objects….
Line Symmetry
This is a magnetic lower case “t” that
came off of my fridge in the kitchen.
My little brother, Moses plays with lots
of letters on the fridge so he can learn
then and someday, learn to read!
This shape has one line of symmetry.
Line Symmetry
This is the same star that has
rotational symmetry but it also
has one line of symmetry.
Line Symmetry
This is a tin box that my
dance teacher gave us filled
with Christmas candies that
she made. I found this in my
kitchen.
It has one line of symmetry.
Line Symmetry
This is the top to our sugar
canister in the kitchen pantry.
It has two lines of symmetry.
Line Symmetry
This is the same candle that
has infinite rotational
symmetry. It also has two
lines of symmetry if you
assume that the wick is
straight up and you can cut it
in half.
THE END !!!!
I would like to thank my mom for helping me draw the
lines on the shapes. Thanks Mommy!