TABLE OF CONTENTS
About the Author
A triangle is a polygon with
three vertices or corners, and
TRIANGLE three edges.
There are three main types of
triangles an obtuse, acute, and
right. An obtuse triangle has
one obtuse angle meaning the
angle has a degree measure
larger then 90 degrees. An
acute triangle has three acute
angles meaning the angles
have a degree measure less
than 90 degrees. A right triangle
has one right angle meaning
the angle has a degree
measure of 90 degrees.
A quadrilateral is a
polygon with four
vertices or corners, and
There are many different types of quadrilaterals. The
most recognized are squares and rectangles. A square
is a rectangle with four edges of the same length and
four 90 degree right angles. A rectangle is a four sided
quadrilateral with four 90 degree right angles.
A pentagon is any five sided polygon.
The most commonly know pentagon would be the
Pentagon building. This is a building with five equal
sides in length.
A hexagon is a polygon with six vertices or corners and
A beehive has hexagonal shaped honeycombs, in order
to ensure that there are no gaps between any of the
A heptagon is a polygon with seven angles and
A regular heptagon has seven equal sides and
seven equal angles.
An octagon is a polygon with eight sides.
The most common octagon is the stop sign.
A enneagon or nonagon is a nine sided polygon.
A regular enneagon or nonagon has nine sides of
equal length and nine angles of the same degree.
A decagon is a polygon with ten sides and ten
A regular decagon has ten equal sides and all the
internal angles are of the same degree.
To find any of the information used in this interactive
All pictures were found using PowerPoint Clip Art.
Rainbow polygon picture found at:
Nonagon swimming pool found at:
ABOUT THE AUTHOR
My name is Amy Pickell, I am currently a
sophomore at Grand Valley State University. I am
from a little town called Pinckney MI. I am majoring
in mathematics with an emphasis on secondary
education so that I can teach math at the high
school level. If you have any question or comments
on this interactive PowerPoint you can contact me
at my e-mail: firstname.lastname@example.org. Thank you for
viewing this PowerPoint, I hope you enjoyed it!