Parts of a Circle Worksheet
Identify and define the key parts of a circle, including radius, diameter, chord, arc, and circumference.
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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.
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?
Chord
Arc
Diameter
Circumference
6. A part of the circumference of a circle is called a(n):
Chord
Arc
Radius
Sector
7. All chords are diameters.
True
False
8. The radius is half the length of the diameter.
True
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?
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