Introduction to Polygons Video Lecture | Mathematics for Grade 6

a polygon is a closed flat shape with
straight edges closed means there are no
gaps in the shape each polygon is given
a name depending on how many sides it
has
a three-sided polygon is called a
triangle a four-sided polygon is called
a quadrilateral when a polygon has five
or more sides
the names follow a simple pattern a five
sided polygon is called a Pentagon a
six-sided polygon is called a hexagon a
seven sided polygon is called a heptagon
an eight sided polygon is called an
octagon a nine sided polygon is called a
non agon and at n-sided polygon is
called a decagon and so on
it's important to learn the prefixes
penta hexa hepta octa Nana and deca as
they appear in chemistry and many other
English words when a polygon has a large
number of sides you can just call it an
end on a 20 sided polygon is a 20 gone a
39 sided polygon is a 39 gun and so on
which of the following shapes are
polygons