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Parts of a Circle Worksheet

Identify and define the key parts of a circle, including radius, diameter, chord, arc, and circumference.

Grade 8 Math GeometryParts of a Circle
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Includes

CustomFill in the BlanksMultiple ChoiceTrue / FalseShort Answer

Standards

CCSS.MATH.CONTENT.7.G.A.2

Topics

mathgeometrycircleparts of a circlegrade 8
7 sections · Free to use · Printable
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Parts of a Circle

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Carefully read each question and provide the best answer. Refer to the diagram of the circle to identify its parts.

Observe the circle diagram below and answer the questions that follow.

Radius (r)Diameter (d)ChordArcCenter

1. A   is a straight line segment from the center of a circle to any point on its circumference.

2. The   is the distance around the circle.

3. A   is a line segment that connects two points on the circumference of a circle.

4. A   is a chord that passes through the center of the circle.

5. Which of the following is twice the length of the radius?

a

Chord

b

Arc

c

Diameter

d

Circumference

6. A part of the circumference of a circle is called a(n):

a

Chord

b

Arc

c

Radius

d

Sector

7. All chords are diameters.

T

True

F

False

8. The radius is half the length of the diameter.

T

True

F

False

9. Explain the difference between a chord and a diameter.

10. If the radius of a circle is 7 cm, what is its diameter?