4th Periodic Test

Question 1

is a set of all points on a plane at a given distance from a fixed point called center.

Answer 1

circle

Question 2

Circles are named by their

Answer 2

centers

Question 3

Half a diameter.
It is a segment from the center to any point of a circle.

Answer 3

Radius

Question 3

The plural of radius is

Answer 3

radii

Question 3

A chord that passes through the center.

Answer 3

Diameter

Question 4

A line segment whose endpoints lie ON the circle.

Answer 4

Chord

Question 5

Any part of a circumference. (the distance around the outside of the circle)

Answer 5

Arc

Question 6

less than 180°, measures less than half a circle

Answer 6

Minor arc

Question 7

more than 180°, measures more than half a circle

Answer 7

Major arc

Question 8

180°, is half a circle

Answer 8

Semicircle

Question 9

The angle formed by two chords having a common endpoint

Answer 9

Inscribed Angle

Question 10

A line that intersects the circle at two points.

Answer 10

Secant

Question 10

An angle formed by two radii and its vertex is the center of the circle.

Answer 10

Central Angle

Question 11

A line that touches the circle at exactly one point.

Answer 11

Tangent

Question 12

full circle angle

Answer 12

360