Circle Formulas and Definitions

which segment represents the radius

• AC

• AB

• LM

• BD

What best describes segment AB?

• chord

• secant

• tangent

• diameter

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

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

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

In the diagram, a tangent and a line drawn to the point of tangency form a right triangle. Solve for "?" (the length of the hypotenuse)

• 15

• 6

• -24

• 14

Tags

CCSS.HSG.C.A.2

find the measure of y

• 30

• 60

• 90

• 180

Tags

CCSS.HSG.C.A.2

Find x.  Assume that segments that appear to be   tangent are tangent.

• 2

• 11

• 7.6

• 9

Tags

CCSS.HSG.C.A.2