Bell Ringer- Can you Figure it Out?
The great Spanish artist Pablo Picasso
was born in a 19th century year
containing numerals with two lines
of symmetry.
Which year could it be:
1871, 1881, or 1801?
1881
Congruency
Are the two shapes congruent?
Are these two space congruent?

What makes figures congruent?
Line Symmetry
Line symmetry describes whether a figure can be folded in
half so that its two parts match exactly
The two parts are equal.
The fold line is a line of symmetry.
Folding Common Shapes
Symmetry Video
Watch Close to See the Things you see Everyday that have
Symmetry!
Which shapes have a line of symmetry?
C
Which shapes have a line of symmetry?
C
One vertical line
of symmetry
One horizontal
line of symmetry
No lines of
symmetry
Explore Symmetry
with Tracing Paper
Create your own
Symmetric Shape
Think of the letters of the
alphabet. Can you list all the
letters with at least one line of
symmetry?
A, B, C, D, E,
H, I, K, M, O,
T, U, V, W, X,
and Y
Get a blank piece of paper.
Fold the paper in half.
Cut a figure around the center fold.
Open the paper back up.
~What is the fold line?
~Is your paper symmetric?
~Why or why not?
Get a blank piece of paper.
Fold the paper in half twice.
Cut a figure around the
folds.
Open the paper back up.
~What are the fold lines?
~Is your paper symmetric?
~Why or why not?