Parts of a Circle Worksheet
Identify and define the various parts of a circle, including radius, diameter, chord, secant, tangent, arc, and sector.
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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 that require it.
1. Which term describes a line segment connecting the center of a circle to any point on the circle?
Diameter
Radius
Chord
Secant
2. A line that intersects a circle at exactly one point is called a:
Chord
Secant
Tangent
Radius
Identify the parts of the circle shown in the diagram below.
A:
B:
C:
D:
E:
3. A is a line segment whose endpoints are on the circle but does not necessarily pass through the center.
4. The longest chord of a circle is its .
5. A is a portion of the circumference of a circle.
6. Explain the difference between a secant and a tangent line.
7. All radii of the same circle are equal in length.
True
False
8. A major arc is always less than a semicircle.
True
False