Parts of a Circle Worksheet
Identify and define the different parts of a circle, including radius, diameter, chord, secant, tangent, and arc.
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Parts of a Circle
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Read each question carefully and provide the best answer. Refer to the diagram of the circle for questions 1-5.
1. The line segment OA is a of the circle.
2. The line segment AB is a of the circle.
3. The line segment CD is a of the circle.
4. The line EF that intersects the circle at exactly one point is a .
5. The curved part of the circle from point C to point G is an .
6. Which of the following defines a diameter?
A line segment connecting two points on the circle.
A line segment from the center to any point on the circle.
A chord that passes through the center of the circle.
A line that intersects the circle at two points.
7. If the radius of a circle is 8 cm, what is its diameter?
4 cm
8 cm
16 cm
24 cm
8. A chord is always longer than a diameter.
True
False
9. A tangent line touches the circle at exactly one point.
True
False
10. Explain the difference between a secant and a tangent line.
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