Polygons - Classification, Angles
word greek term comes
Polygons are closed plane figures bounded by three or more line segments. In the world of geometry, polygons abound. The term refers to a multisided geometric form in the plane. The number of angles in a polygon always equals the number of sides.
Polygons are named to indicate the number of their sides or number of noncollinear points present in the polygon.
A square is a special type of polygon, as are triangles, parallelograms, and octagons. The prefix of the term, poly comes from the Greek word for many, and the root word Gon comes from the Greek word for angle.
Additional Topics
A regular polygon is one whose whose sides and interior angles are congruent. Regular polygons can be inscribed by a circle such that the circle is tangent to the sides at the centers, and circumscribed by a circle such that the sides form chords of the circle. Regular polygons are named to indicate the number of their sides or number of vertices present in the figure. Thus, a hexagon has six side…
In a polygon, the line running between non-adjacent points is known as a diagonal. The diagonals drawn from a single vertex to the remaining vertices in an n-sided polygon will divide the figure into n-2 triangles. The sum of the interior angles of a convex polygon is then just (n-2)* 180. If the side of a polygon is extended past the intersecting adjacent side, it defines the exterior angle of th…
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User Comments
almost 5 years ago
i reallty need help learning about polygons.I have had teachers take their timw worj=king with after school,intill i had seen this page and it really help me out alot thanks page.