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What are Polygons. Types of polygons
A polygon is a closed plane figure with straight sides.
Polygons are 2-dimensional shapes. They are made of straight lines, and the shape is closed.
The Vertex is endpoint where the two sides meet.
The Vertex is endpoint where the two sides meet.
Polygon
Polygon
These figures are polygons
The Triangle and Square
are two of the most use
Polygons.
are two of the most use
Polygons.
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Not a Polygon
(has a curve)
(has a curve)
Not a Polygon
(open, not closed
(open, not closed
Simple or Complex
A polygon is simple if it is described by a single, non-intersecting boundary;
otherwise it is said to be complex.
otherwise it is said to be complex.
A polygon is called regular if all its sides are of equal length and all its angles
are equal. Otherwise it is irregular.
are equal. Otherwise it is irregular.
Simple Polygon
Complex Polygon
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Regular or Irregular
regular
regular
regular
Irregular
Names of Polygons
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Concave or Convex
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Irregular
More Videos on polygons
Complex polygon lines intersects.
Circle, not a
polygon, no straight
sides.
polygon, no straight
sides.
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Polygon
Polygon
Polygon
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Polygons can be Convex meaning all angles (vertex) are facing out like most of the
Polygons above. Are they could be concave or nonconvex Polygons with one or more
angles (vertex) pointing in. Like the one to the right.
Polygons above. Are they could be concave or nonconvex Polygons with one or more
angles (vertex) pointing in. Like the one to the right.
Example of a
concave or
nonconvex
concave or
nonconvex
Triangles and squares are two
examples of Regular Convex Polygons
examples of Regular Convex Polygons
Polygons can be named by how many sides they have, starting from
the Triangle which has three sides.
the Triangle which has three sides.
Geometry
>Polygons < you are here
video