WHAT IS A POLYGON?
• A 2-D shape made of straight lines
• A close shape
Are these shapes polygons?
Yes they are!
• The sides are straight
• The shapes are closed
and flat
And what about these ones?
No, they aren’t!
• The sides are round
• Some shapes are
opened
There are different types of
polygons...
REGULAR POLYGONS:
All the sides are equal
IRREGULAR POLYGONS
• The sides are different
CLASSIFICATION
We cansort outpolygons,
according to thenumber
ofshapes.
Herewego...
I have 3 straight sides.
I have 3 corners.
I’m a
triangle!
We are all quadrilaterals.
We all have 4 sides and 4
corners.
I have 5 straight sides.
I have 5 corners.
I am a
pentagon!
I have 6 straight sides.
I have 6 corners.
I am a
hexagon!
I have 7 straight sides.
I have 7 corners.
I am an
heptagon!
I have 8 straight sides.
I have 8 corners.
I am an
octagon!
REMEMBER....
3 sides
TRIANGLE
4 sides
5 sides
QUADRILATERAL PENTAGON
6 sides
HEXAGON
7sides
HEPTAGON
8 sides
OCTAGON
Can you
guess the
shape?
I am a flat shape.
I have 4 straight sides.
I have 4 corners.
I have two short sides and two
long sides.
What shape am I?
I’m a
rectangle!
I am a flat shape.
I have 5 straight sides.
I have 5 corners.
What shape am I?
I am a
pentagon!
I am a flat shape.
I have 3 straight sides.
I have 3 corners.
What shape am I?
I’m a
triangle!
I am a flat shape.
I have 4 straight sides.
I have 4 corners.
All my sides are the same
length.
What shape am I?
I’m a
square!
I am a flat shape.
I have 6 straight sides.
I have 6 corners.
What shape am I?
I am a
hexagon!
I am a flat shape.
I have 8 straight sides.
I have 8 corners.
What shape am I?
I am an
octagon!
I am a flat shape.
I have 7 straight sides.
I have 7 corners.
What shape am I?
I am an
heptagon!
WELL DONE