10.1-10.2 Terminology Quiz

Question 1

Interior of a circle

Answer 1

Points inside of a circle

Question 2

Exterior of a circle

Answer 2

Points outside of a circle

Question 3

Chord

Answer 3

A segment whose endpoints are on the circle

Question 4

Diameter

Answer 4

A chord that passes through the center of a circle

Question 5

Radius

Answer 5

Segment whose endpoints consist of the center of the circle and a point on the circle

Question 6

Circle

Answer 6

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

Question 7

Tangent

Answer 7

If a line intersects a circle at exactly 1 point, then the line is a tangent of a circle

Question 8

Point of tangency

Answer 8

If a line intersects a circle in exactly one point, then the line is A tangent of a circle. This point of intersection is called the point of tangency

Question 9

Secant

Answer 9

If a line intersects a circle at two points, then the line is a secant of the circle

Question 10

Common tangent

Answer 10

A line is that tangent to 2 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 intersects the segment that joins the centers of the circles

Question 13

Two circles can intersect in four different ways

Answer 13

1) Who circles can have no points of intersection
2) two circles can have exactly 1 point of intersection
3) two circles can have exactly 2 points of intersection
4) two points can have infinitely many points of intersection

Question 14

Concentric circles

Answer 14

Circles that have the same center

Question 15

Congruent circles

Answer 15

Circles with congruent radii or diameters

Question 16

If a line is tangent to a circle,

Answer 16

Then it is perpendicular to the radius drawn to the point of tangency

Question 17

In a plane, if a point is perpendicular to a radius of a circle, at its end point on the circle,

Answer 17

Then the line is tangent to the circle

Question 18

Two segments from the same exterior point are tangent to a circle,

Answer 18

Then they are congruent

Question 19

Inscribed circle

Answer 19

A circle is inscribed in a polygon if each side of the polygon is tangent to the circle

Question 20

Circumscribed polygon

Answer 20

A circle is circumscribed about a polygon if each vertex of the polygon lies on the circle

Question 21

Central Angle

Answer 21

And angle whose vertex is the center of the circle

Question 22

Minor arc

Answer 22

Consists of the endpoints of the central angle and all points on the circle that are in the interior of the central angle

Question 23

Measure of a minor arc

Answer 23

The measure of the central angle

Question 24

Semicircle

Answer 24

An arc whose endpoints are the endpoints of the diameter

Question 25

Major arc

Answer 25

Consists of the endpoints of the central angle and all points on the circle that lie in the exterior of the central angle

Question 26

Measure of a major arc

Answer 26

360 - measure of the associated minor arc

Question 27

Adjacent arcs

Answer 27

Two arcs of the same circle are adjacent if they intersect at exactly one point

Question 28

Arc addition postulate

Answer 28

The measure of an arc formed by two adjacent arcs is the sum of the measures of the two arcs

Question 29

Congruent arcs

Answer 29

In the same circle or congruent circles, two arcs are congruent if they have the same measure

Question 30

In the same circle or in congruent circles, two arcs are congruent iff

Answer 30

Their central angles are congruent