Question

activity 2. fill in the blanks with the best answer.

1. a is set of all points at the same distance from its center. it is named by its center.
2. is a line - segment whose endpoints lie on the circle.
3. is a line which touches the circle at only one point.
4. is the point of contact of the circle and the tangent line.
5. secant is the line that intersects a circle at points.
6. an arc is the broken part of the circle. the three types of which are: , , and .
7. a angle is an angle whose vertex is the center of the circle and whose sides are the radii of the circle.
8. the degree measure of a minor arc is
9. the degree measure of a is 360° minus the degree measure of the minor arc.
10. circles are if they lie in the same plane, they have the same center, and they have radii of different lengths.
11. if the length of the radii of two circle are equal, then the two circles are
12. any two congruent chords are from the center.
13. a line from the center to a chord, bisects the chord.
14. the perpendicular bisector of a chord of a circle passes through the of the circle.
15. if a radius a chord and its arc then the radius is perpendicular to the chord.

Explanation:

1. A circle is defined as the set of all points at the same distance from its center.
2. A chord is a line - segment with endpoints on the circle.
3. A tangent is a line that touches the circle at exactly one point.
4. The point of contact of the circle and the tangent line is the point of tangency.
5. A secant intersects a circle at two points.
6. The three types of arcs are semicircle, minor arc, and major arc.
7. A central angle has its vertex at the center of the circle and its sides as radii.
8. The degree - measure of a minor arc is less than 180°.
9. The degree - measure of a major arc is 360° minus the degree - measure of the minor arc.
10. Concentric circles lie in the same plane, have the same center, and different radii lengths.
11. If the radii of two circles are equal, the two circles are congruent.
12. Any two congruent chords are equidistant from the center.
13. A line from the center perpendicular to a chord bisects the chord.
14. The perpendicular bisector of a chord of a circle passes through the center of the circle.
15. If a radius bisects a chord and its arc, then the radius is perpendicular to the chord.

Answer:

1. circle
2. chord
3. tangent
4. point of tangency
5. two
6. semicircle, minor arc, major arc
7. central
8. less than 180°
9. major arc
10. concentric
11. congruent
12. equidistant
13. perpendicular, bisects
14. center
15. bisects