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Questions and Answers
What is a central angle?
What is a chord?
A segment with endpoints that are on the circle.
What defines a circle?
The locus of all points in a plane equidistant from a given point called the center.
What is the circumference of a circle?
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When is a circle said to be circumscribed about a polygon?
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What is a diameter?
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What does it mean for a polygon to be inscribed in a circle?
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What is necessary for an angle to intercept an arc?
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What is a major arc?
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What is a minor arc?
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What is pi?
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What is the point of tangency?
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What is a radius?
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What is a secant?
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What is a semicircle?
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What is a tangent?
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Study Notes
Circle Geometry Vocabulary

Central Angle: Intersects a circle at two points, vertex located at the circle's center.

Chord: A segment whose endpoints lie on the circumference of a circle.

Circle: A set of points equidistant from a central point, known as the center.

Circumference: The total distance around the circle.

Circumscribed Circle: A circle that encompasses all vertices of a polygon, forming a boundary.

Diameter: The longest chord, passing through the center of a circle, measuring twice the radius.

Inscribed Polygon: A polygon with all vertices located on a circle.

Intercepted Arc: An arc is intercepted when endpoints lie on an angle with all other points within the circle's interior.

Major Arc: An arc measuring greater than 180 degrees.

Minor Arc: An arc measuring less than 180 degrees.

Pi (Ï€): An irrational number, given by the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.

Point of Tangency: The single point where a tangent line intersects the circle.

Radius: A segment connecting the center of the circle to any point on its circumference.

Secant Line: A line that intersects the circle at two distinct points.

Semicircle: An arc that spans half a circle, measuring exactly 180 degrees.

Tangent Line: A line that touches the circle at one point, not penetrating the circle.
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Description
Test your understanding of key vocabulary from Chapter 10 of Glencoe Geometry. This quiz covers essential terms such as central angle, chord, and circumference, helping you solidify your geometric knowledge. Perfect for review or study sessions!