Classifying Different Types of Polygons

The video tutorial covers the topic of polygons, starting with their definition as closed figures made by joining line segments. It explains how to classify polygons by identifying examples and non-examples, focusing on the importance of closed shapes and intersecting lines. The tutorial then introduces regular polygons, which have equal sides and angles, and provides examples and non-examples. Finally, it reviews the names of polygons based on the number of sides, from triangles to decagons, using both Greek and Latin naming conventions.

What is the definition of a polygon?

• A figure with lines that do not intersect

• An open figure with multiple angles

• A closed figure formed by joining line segments, each intersecting exactly two others

• A shape with curved lines

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CCSS.2.G.A.1

Why is a pink heart not considered a polygon?

• It has only one side

• It has curved lines and does not meet the intersection requirement

• It is not a closed figure

• It has equal sides and angles

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CCSS.2.G.A.1

Which of the following is a correct example of a polygon?

• An open figure with multiple sides

• A closed figure with sides intersecting more than two others

• A figure with sides not meeting at endpoints

• A closed figure with each side intersecting exactly two others

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CCSS.2.G.A.1

What makes a polygon regular?

• Being open and not closed

• Having angles of different measures

• Having sides of different lengths

• All sides and angles are equal

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CCSS.2.G.A.1

Which shape is an example of a regular polygon?

• A polygon with one side longer than the others

• A non-closed figure

• Triangle with all sides and angles equal

• A shape with unequal sides

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CCSS.2.G.A.1

Which of the following is not a characteristic of a regular polygon?

• Sides intersect at varying angles

• All angles are of the same measure

• It is a closed figure

• All sides are of the same length

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CCSS.2.G.A.1

What is a four-sided polygon called?

• Hexagon

• Triangle

• Quadrilateral

• Pentagon

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CCSS.2.G.A.1

What is the name given to a seven-sided polygon?

• Hexagon

• Heptagon

• Nonagon

• Octagon

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CCSS.2.G.A.1

What is the Greek naming system equivalent for a nine-sided polygon?

• Nonagon

• Decagon

• Heptagon

• Anagon

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CCSS.2.G.A.1

What is the Latin-derived name for a nine-sided polygon?

• Decagon

• Heptagon

• Nonagon

• Anagon

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CCSS.2.G.A.1