Introduction to Polygons

What is a polygon?

• A closed plane figure made up of line segments
• An open plane figure made up of line segments
• A closed plane figure made up of rays
• An open plane figure made up of rays

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CCSS.2.G.A.1

CCSS.1.G.A.1

A(n) _____ is a polygon in which all its angles are congruent.

• diagonal of a polygon

• equilateral polygon

• equiangular polygon

• vertex of a polygon

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CCSS.2.G.A.1

What is the name of this polygon?

• Hexagon

• Octagon

• Pentagon

• None of the above

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CCSS.2.G.A.1

• Quadrilateral

• Hexagon

• Pentagon

• Octagon

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A polygon is regular if....

• All angles are equal and all sides are equal

• Only all sides are equal

• Only all angles are equal

• All sides have different measurements

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CCSS.2.G.A.1

True or False: A circle is a polygon.

• True

• False

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CCSS.2.G.A.1

A polygon is...

• A shape with straight sides that meet at angles

• A shape with at least 5 sides

• A shape that has curved edges

• A shape that has 4 sides or more

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CCSS.2.G.A.1

The sides of polygons can be open

• True

• False

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CCSS.2.G.A.1

CCSS.1.G.A.1

An octagon has how many sides?

• 5

• 6

• 7

• 8

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CCSS.2.G.A.1

Anna says that this shape is a polygon. Is she correct or incorrect?

• Correct

• Incorrect

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