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Classifying Polygons Flashcards

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Questions and Answers

What is the number of sides in a triangle?

3 (correct)

How many sides does a quadrilateral have?

What defines a pentagon?

How many sides does a hexagon have?

6 Signup and view all the answers

What is the number of sides in a heptagon?

7 Signup and view all the answers

An octagon is a polygon with how many sides?

8 Signup and view all the answers

Define the number of sides in a nonagon.

9 Signup and view all the answers

How many sides does a decagon have?

10 Signup and view all the answers

How many sides does a dodecagon have?

12 Signup and view all the answers

What is the general term for a polygon with N sides?

N-gon Signup and view all the answers

All sides of an equilateral polygon are congruent.

True Signup and view all the answers

In an equiangular polygon, all angles in the interior are congruent.

True Signup and view all the answers

A regular polygon is convex and both equilateral and equiangular.

True Signup and view all the answers

Is a decagon regular?

Sometimes Signup and view all the answers

Can a concave polygon be regular?

Never Signup and view all the answers

What is a convex polygon?

A polygon where no line containing a side of the polygon contains a point in its interior. Signup and view all the answers

What is a concave polygon?

A polygon that is not convex. Signup and view all the answers

Define a polygon.

A closed plane figure with specific properties. Signup and view all the answers

Study Notes

Classification of Polygons

Triangle: 3 sides.
Quadrilateral: 4 sides.
Pentagon: 5 sides.
Hexagon: 6 sides.
Heptagon: 7 sides.
Octagon: 8 sides.
Nonagon: 9 sides.
Decagon: 10 sides.
Dodecagon: 12 sides.
N-gon: A polygon with N sides, where N can be any integer.

Types of Polygons

Equilateral Polygon: All sides are congruent (equal in length).
Equiangular Polygon: All interior angles are congruent (equal in measure).
Regular Polygon: A convex polygon that is both equilateral and equiangular.

Polygon Regularity

A decagon is regular sometimes, indicating that not all decagons have equal sides and angles.
A concave polygon is regular never, as concave shapes have at least one inward angle.

Polygon Characteristics

Convex Polygon: No line containing a side of the polygon contains a point in the interior, meaning all interior angles are less than 180 degrees.
Concave Polygon: A polygon that is not convex, characterized by having at least one interior angle greater than 180 degrees.

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Description

Test your knowledge of different polygons with these flashcards. Each card provides the name of a polygon along with its defining number of sides. Perfect for students looking to reinforce their understanding of geometry.