Geometry Chapter 10 Vocab - Glencoe
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Questions and Answers

What is the center of a circle?

A point equidistant from the ends of a line or the extremities of a figure.

What is a central angle?

An angle that intersects a circle in 2 points and has its vertex at the center of a circle.

What is a chord?

A segment with endpoints that are on the circle.

What is a circle?

<p>The locus of all points in a plane equidistant from a given point.</p> Signup and view all the answers

What is the circumference of a circle?

<p>The distance around a circle.</p> Signup and view all the answers

What does it mean if a circle is circumscribed about a polygon?

<p>A circle contains all vertices of a polygon.</p> Signup and view all the answers

What is the diameter of a circle?

<p>A chord that passes through the center of the circle.</p> Signup and view all the answers

What does it mean for a polygon to be inscribed in a circle?

<p>Each of its vertices lies on the circle.</p> Signup and view all the answers

What does it mean when an angle is intercepted?

<p>An angle intercepts an arc if certain conditions are met.</p> Signup and view all the answers

What is a major arc?

<p>An arc with a measure of 180 degrees or more.</p> Signup and view all the answers

What is a minor arc?

<p>An arc with a measure of less than 180 degrees.</p> Signup and view all the answers

What is pi?

<p>An irrational number represented by the ratio of the circumference of a circle to the diameter of a circle.</p> Signup and view all the answers

What is a point of tangency?

<p>The point where a line intersects a circle in only one point.</p> Signup and view all the answers

What is the radius of a circle?

<p>Any segment with endpoints at the center of the circle and a point on the circle.</p> Signup and view all the answers

What are secants?

<p>Any line that intersects a circle in exactly 2 points.</p> Signup and view all the answers

What is a semicircle?

<p>An arc that measures up to 180 degrees.</p> Signup and view all the answers

What is a tangent line?

<p>A line that intersects a circle in exactly 1 point.</p> Signup and view all the answers

Study Notes

Geometry Vocabulary

  • Center: A point that is equidistant from the endpoints of a line or the extremities of a geometric figure.

  • Central Angle: An angle formed by two radii intersecting a circle at two points, with the vertex at the circle's center.

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

  • Circle: A set of all points in a plane that are equidistant from a given point, known as the center.

  • Circumference: The total distance around a circle, essentially its perimeter.

  • Circumscribed: A circle is described as circumscribed around a polygon if it encompasses all vertices of that polygon.

  • Diameter: A special chord of a circle that runs through its center, equal to twice the radius.

  • Inscribed: A polygon is inscribed in a circle if each vertex of the polygon touches the circle.

  • Intercepted Arc: For an angle to intercept an arc, specific conditions must be met regarding the endpoints and the arc's positioning relative to the angle.

  • Major Arc: An arc that spans an angle measuring 180 degrees or more.

  • Minor Arc: An arc measuring less than 180 degrees.

  • Pi (π): An irrational number representing the ratio of the circumference of a circle to its diameter, approximately 3.14.

  • Point of Tangency: The single point at which a line intersects a circle.

  • Radius: A line segment with one endpoint at the center of a circle and the other on the circumference.

  • Secants: Lines that cross a circle and intersect it at exactly two points.

  • Semi Circle: An arc that measures exactly 180 degrees.

  • Tangent: A line that touches a circle at only one point, existing in the plane of the circle.

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Description

Test your knowledge of key vocabulary from Geometry Chapter 10 in Glencoe's curriculum. This quiz features important terms such as center, central angle, chord, and circle, along with their definitions. Perfect for reviewing essential concepts in geometry.

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