Geometry Unit 10--Circles Vocabulary Quizlet

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Across
  1. 5. A segment from the center of a circle to any point on the circle.
  2. 6. A line that intersects a circle at two points.
  3. 7. An arc that measures less than 180 degrees.
  4. 10. An angle whose vertex is on a circle and whose sides contain chords of the circle.
  5. 13. The distance between endpoints along an arc, calculated as a fraction of the circumference.
  6. 14. The measure of the central angle that forms the arc, in degrees.
Down
  1. 1. The standard form of the equation of a circle with center (h, k) and radius r is (x - h)² + (y - k)² = r².
  2. 2. A line in the plane of a circle that intersects the circle at exactly one point, called the point of tangency.
  3. 3. An arc that lies between the two sides of an inscribed angle and has endpoints on the angle's sides.
  4. 4. An angle whose vertex is the center of a circle and whose sides are radii.
  5. 8. The distance around a circle.
  6. 9. A chord that passes through the center of a circle. It is twice the length of the radius.
  7. 11. The set of all points in a plane equidistant from a given point caled the center.
  8. 12. A segment whose endpoints are on the circle.
  9. 13. A continuous portion of a circle.
  10. 15. An arc that measures more than 180 degrees.