Transcript Polygons - Hamilton Local Schools Home

Polygons
by Amy Pihlainen
Polygons
• The word polygon means
“many angles”
• A two dimensional object
• A closed figure
More about Polygons
• Made up of three or more
straight line segments
• There are exactly two sides that
meet at a vertex
• The sides do not cross each
other
Examples of Polygons
These are not Polygons
Terms:
Side: One of the line segments
that make up a polygon.
Vertex: point where two sides
meet.
Terms continued
• Interior angle: an angle formed
by two adjacent sides inside the
polygon.
• Exterior angle: an angle formed
by two adjacent sides outside
the polygon.
Terms continued
Types of Polygons
• Equiangular Polygon: a
polygon in which all of the
angles are equal
• Equilateral Polygon: a polygon
in which all of the sides are the
same length
Types of Polygons continued
• Regular Polygon: a polygon
where all the angles are equal
and all of the sides are the same
length. They are both
equilateral and equiangular
Examples of Regular Polygons
Names of Polygons
• Triangle: a three sided polygon
• Quadrilateral: a four sided
polygon. A quadrilateral that is
a regular polygon is called a
square.
Names continued
• Pentagon: a five sided polygon
• Hexagon: a six sided polygon
• Heptagon: a seven sided polygon
Names continued
• Octagon: an eight sided
polygon
• Decagon: a ten sided polygon
• Dodecagon: a twelve sided
polygon