Circles Definitions

Which of the following is a good definition for a circle?

• All points equidistant from a single point

• A round polygon

• A continuous curve

• Two semi-circles put together

Is line AB tangent to the circle?

• YES

• NO
  NO

• Can't Tell
  Can't Tell

A segment whose endpoints lie on a circle is a _______.

• tangent

• chord

• diameter

• secant

A line in the same plane as a circle that intersects the circle at exactly one point is a ____________.

• tangent

• secant

• chord

• radius

Match the following vocabulary term with its appropriate part of the circle.

• Point of Tangency

• Minor Arc

• Line PR

• Major Arc

• Semi-Circle

• Point V

• Secant Line

A tangent is a line that touches a circle at just one point and forms a right angle with the circle's radius.

• True

• False

The definition of a circle is

• set of all points in a plane that are the same distance from a point called the center

• the distance around a secant

• a large figure

• a pizza, orange, plum, or watermelon

The definition of radius is

• distance from one point to another point

• distance around the circle

• distance from the center to any point on the circle

• distance across the circle through the center

The definition of diameter is

• distance from the center of any point on the circle

• distance across the circle through the center

• distance from one point to another

• distance around the circle

which segment represents the radius

• AC

• AB

• LM

• BD