Intro of Circles

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

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CCSS.HSG.CO.A.1

CCSS.HSG.GMD.A.1

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

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CCSS.5.G.B.3

CCSS.5.G.B.4

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

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CCSS.7.G.B.4

The distance halfway across the circle is called the...

• radius
• diameter
• circumference
• area

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CCSS.HSG.C.A.2

The distance from the center of the circle to any point on the circle is called the...

• radius
• diameter
• circumference
• area

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CCSS.HSG.C.A.2

CCSS.HSG.CO.A.1

The distance across the circle through the center is called the...

• radius
• diameter
• circumference
• area

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CCSS.4.MD.C.5

The perimeter of a circle is usually called the...

• radius
• diameter
• circumference
• area

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CCSS.HSG.GMD.A.1

If you multiply 2 × r  then you will get the...

• radius
• diameter
• circumference
• area

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CCSS.7.G.B.4

A circle has only one radius.

• True
• False
• Only true when there's one center

The line segment between the center and a point on the circle is called its:

• Radius
• Diameter
• Chord
• Tangent

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CCSS.HSG.C.A.2