Circle Geometry Flashcards
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Questions and Answers

What is the diameter of a circle?

  • A chord that contains the center of a circle (correct)
  • The perimeter of a circle
  • A line that intersects a circle at two points
  • A segment from a point on a circle to the center

What is a secant?

A line that intersects a circle at exactly two points

What does congruent mean in the context of circles?

Circles with the same diameter and radius length

What are concentric circles?

<p>Circles that share the same center</p> Signup and view all the answers

Define a circle.

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

What is circumference?

<p>The perimeter of a circle</p> Signup and view all the answers

What is an arc in relation to a circle?

<p>Two points on a circle and the continuous part of the circle between those two points</p> Signup and view all the answers

What is a minor arc?

<p>An arc of a circle whose length is less than the length of a semicircle</p> Signup and view all the answers

What is a radius?

<p>A segment from a point on a circle to the center</p> Signup and view all the answers

Define a tangent.

<p>A line that lies in the plane of a circle and intersects the circle at exactly one point</p> Signup and view all the answers

What is a chord?

<p>A segment whose endpoints lie on a circle</p> Signup and view all the answers

What is a major arc?

<p>An arc of a circle whose length is greater than the length of a semicircle</p> Signup and view all the answers

Study Notes

Circle Terminology

  • Diameter: A specific chord that passes through the center of a circle, representing the longest distance across the circle.

  • Secant: A line that intersects a circle at precisely two points, extending infinitely in both directions.

  • Congruent Circles: Circles that have identical diameters and radii, essentially being the same size.

  • Concentric Circles: A set of circles that share the same center point but have different radii.

  • Circle: Defined as the collection of all points in a plane that are equidistant from a fixed point, known as the center.

  • Circumference: The total distance around the circle, equating to its perimeter. It can be calculated using the formula C = Ï€d, where d is the diameter.

  • Arc: Comprised of two points on a circle and the continuous curve connecting them, representing a portion of the circumference.

  • Minor Arc: An arc that measures less than 180 degrees, indicating its length is shorter than half the circle.

  • Radius: A segment that connects any point on the circle to the center, effectively half of the diameter.

  • Tangent: A straight line that touches the circle at only one point, remaining in the same plane as the circle.

  • Chord: A line segment with both endpoints lying on the circumference of the circle, can vary in length.

  • Major Arc: An arc that measures more than 180 degrees, indicating its length spans greater than half the circle.

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Description

Test your knowledge of circle geometry with these flashcards. Each card features a key term related to circles along with its definition, helping you learn important concepts such as diameter, secant, and concentric circles. Perfect for students looking to master circle-related terminology.

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