Content code
m1679
Slug (identifier)
polygons
Parent content
Grades
Grade 3
Grade 4
Equivalent file in the opposite grade group
Topic
Mathematics
Content
Title (level 2)
3rd and 4th grade
Title slug (identifier)
third-and-fourth-grade
Contenu
Video
Contenu
Title
What is a polygon?
Content
Content
Corps
A polygon is a closed plane figure formed by broken and closed lines and that has at least 3 sides.
Examples:
Squares, rectangles, rhombuses, and triangles are polygons.
Image
Content
Corps
The circle is formed by a curved line. Therefore, it is not a polygon.
Image
Title
What are the names of the different polygons?
Content
Corps
Polygons are named according to their number of sides.
Image
Title
What is a convex polygon and a non-convex polygon?
Content
Content
Corps
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A polygon is convex when no part of it enters the interior of the figure.
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A polygon is non-convex, or concave, when at least one part of it enters inside the figure.
Examples:
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Convex |
Non-convex |
|---|---|
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Content
Corps
To determine if a polygon is convex or not, extend the sides of the figure. A polygon is non-convex when at least one line enters the inside the figure.
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Convex |
Non-convex |
|---|---|
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Contenu
Title
See also
Content
Links
Type
Internal
Title
Plane Figures
Remove audio playback
No
Printable tool
Off