math terms

  1. radius
    half of the diameter
  2. center
    the center of the circle
  3. chord
    a segment whose endpoints are on a circle
  4. diameter
    a chord that passes through the center of a circle
  5. secant
    a line that intersects a circle at two points
  6. point of tangency
    a line that intersects the circle exactly one point
  7. tangent segments from a common external point are
  8. central angle
    an angle whose vertex is the center of the circle
  9. semicircle
    arc with endpoints of a diameter
  10. arc
    unbroken part of the circle
  11. minor arc
    part of a circle measuring <180 degrees
  12. major acr
    part of a circle measuring between 180 and 360 degrees
  13. measure of a minor arc
    named with two letters
  14. measure of a major arc
    named with three letters
  15. congruent circles
    two circles are congruent if they have the same radius
  16. congruent arcs
    two arcs are congruent arcs if thhey have the same measure and are acrcs of the same circle or of congruent circles
  17. inscribed angle
    an angle whose vertex is on a circle
  18. intercepted arc
    the arc that lies in the interior of an inscribed angle and has endpoints on the angle
  19. inscribed polygon
    a polygon whose vertices all lie on a circle
  20. circumscribed circle
    a circle that contains the vertices of an inscribed polygon
  21. segment of a chord
    when two chords intersect the interior of a circle , each chord is divided into two segments
  22. secant segment
    a segment that contains a chord of a circle and has exactly one endpoint outside the circle
  23. external segment
    the part of secant segment that's outside the circle
  24. circumference
    the distance around a circle
  25. arc length
    portion of the circumference of a circle
  26. sector of a circle
    the region bounded by two radiis of the circle and their intercepted arc
  27. sphere
    the set of all points in space equidistant from a given point
  28. center of a sphere
    the given point from which all points on the sphere are equidistant
  29. radius of a sphere
    a segment from the center to a point on the sphere
  30. chord of a sphere
    a sphere is a chord that contains the center of the sphere
  31. great circle
    the intersection of the sphere and a plane that contains the center of the sphere
  32. hemisphere
    one of the congruent halfs of a sphere
Card Set
math terms
math terms