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Polygons are closed, 2D shapes with straight sides.
Polygons are closed, 2D shapes with straight sides.
Do you remember the names of polygons? What do you call a polygon with a million sides?
Check out this website to learn: https://www.storyofmathematics.com/polygons-definition
Practice and Games:
Sheppard Software - Polygon Shape Game
Sheppard Software - Similar and Congruent Shapes Game
Sheppard Software - Quadrilaterals Game
Polygons in Real Life
Polygons in Real Life
Convex
Convex
All interior angles are less than 180 degrees.
Concave
Concave
At least one interior angle is more than 180 degrees.
Regular
Regular
All sides and angles are the same.
In a regular polygon, the number of lines of symmetry are equal to the number of sides.
Irregular
Irregular
Not all the sides and angles are the same. There may or may not be lines of symmetry.
Congruent Polygons
Congruent Polygons
They are the exact same size and shape. The angles are the same.
If stairs are not congruent, people are more likely to trip!
Non-Congruent Polygons
Non-Congruent Polygons
The sides and angles are not exactly the same.
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