<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Dismiss
Skip Navigation

6.9: Identifying Polygons

Difficulty Level: At Grade Created by: CK-12
Atoms Practice
Estimated6 minsto complete
%
Progress
Practice Polygon Classification
Practice
Progress
Estimated6 minsto complete
%
Practice Now
Loading... 

Vocabulary

Concave

Concave

A concave polygon has at least one interior angle greater than 180 degrees. A common way to identify a concave polygon is to look for a "caved-in" side of the polygon.
Convex

Convex

A convex polygon contains no interior angles greater than 180 degrees.
Diagonal

Diagonal

A diagonal is a line segment in a polygon that connects nonconsecutive vertices
Exterior angles

Exterior angles

An exterior angle is the angle formed by one side of a polygon and the extension of the adjacent side.
Interior angles

Interior angles

Interior angles are the angles inside a figure.
Irregular Polygon

Irregular Polygon

An irregular polygon is a polygon with non-congruent side lengths.
Polygon

Polygon

A polygon is a simple closed figure with at least three straight sides.
Regular Polygon

Regular Polygon

A regular polygon is a polygon with all sides the same length and all angles the same measure.
Vertices

Vertices

Vertices are points where line segments intersect.
Equilateral

Equilateral

A polygon is equilateral if all of its sides are the same length.

Image Attributions

Show Hide Details
Description
Difficulty Level:
At Grade
Grades:
Date Created:
Jan 23, 2013
Last Modified:
Mar 28, 2016
Files can only be attached to the latest version of Modality
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original
 
MAT.GEO.140.L.5

Original text