10.1 Circles

Question 1

Circle

Answer 1

Set of all points in a plane that are equidistant from the given point, called the center of the circle

Question 2

Interior of a Circle

Answer 2

All the points inside a circle

Question 3

Exterior of Circle

Answer 3

All points outside the circle

Question 4

Chord

Answer 4

A segment whose endpoints are on the circle

Question 5

Diameter

Answer 5

Chord that passes through the center of the circle

Question 6

Radius

Answer 6

Segment that has the center as an endpoint and a point on the circle as the other endpoint

Question 7

Tangent

Answer 7

A line that intersects a circle at exactly one point

Question 8

Point of Tangency

Answer 8

The point at which a tangent intersects the circle

Question 9

Secant

Answer 9

A line that intersects a circle at two different points

Question 10

Common Tangent

Answer 10

A line that is tangent to two circles

Question 11

Common External Tangent

Answer 11

A common tangent that does not intersect the segment that joins the centers of the circles

Question 12

Common Internal Tangent

Answer 12

A common tangent that does intersect the segment that joins the centers of the circles

Question 13

Tangent Circles

Answer 13

Circles that have exactly one point of intersection

Question 14

Concentric Circles

Answer 14

Circles that have the same center and have different radii

Question 15

Congruent Circles

Answer 15

Two circles are congruent if and only if they have congruent radii