5 Written Questions

1. part of a circle that measures less than 180
2. the distance around a circle
3. an arc whose measure is greater that 180º
4. a line segment that joins two points on a circle
5. the locus of points in a plane that are equidistant from a given point

5 Matching Questions

1. inscribed
2. semicircle
3. radius
4. central angle
5. secant line

1. a an angle whose vertex is the center of a circle is a central angle of the circle
2. b A polygon is inscribed in a circle if each of its vertices lie on the circle
3. c a plane figure with the shape of half a circle
4. d the length of a line segment between the center and circumference of a circle or sphere
5. e a line that intersects a circle of sphere in two points

5 Multiple Choice Questions

1. a circle that contains all the vertices of a polygon
   1. circle
   2. circumference
   3. circumscribed
   4. inscribed
2. the ratio of the circumference of a circle to its diameter
   1. chord
   2. pi
   3. circle
   4. arc
3. having a common center
   1. minor arc
   2. tangent line
   3. concentric
   4. sphere
4. a region bounded by two radii and their intercepted on a circle
   1. sphere
   2. arc
   3. chord
   4. sector
5. a line that intersects a circle of sphere at exactly one point is tangent to the circle or sphere
   1. tangent line
   2. secant line
   3. concentric
   4. great circle

5 True/False Questions

1. great circle → a plane figure with the shape of half a circle

   True        False

2. center of a circle → an angle whose vertex is the center of a circle is a central angle of the circle

   True        False

3. inscribed angles → A polygon is inscribed in a circle if each of its vertices lie on the circle

   True        False

4. sphere → a line segment that joins two points on a circle

   True        False

5. diameter → the locus of points in a space in a given distance from a point, the center of the sphere

   True        False