Tangent Lines and Radius

The radius of a circle is

• The measurement from the center of a circle to an edge of the circle.
• The measurement around the circle
• The measurement from and edge of the circle to another edge through the center
• A line perpendicular to the diameter of the circle

Which best describes segment AB?

• chord
• secant
• tangent
• diameter

Name the secant(s).

• segment WR
• line VT
• s
• segment WR and line VT

Name the tangent line. 

• s
• WR
• VT
• QR

Name the chord(s).

• VT
• WR
• VT and WR
• s

A line segment that passes through the center of a circle, connecting two points on a circle is called ________________.

• diameter
• radius
• circumference
• area

What is the diameter?

• 8
• 16
• 10
• 4

A tangent line intersecting with a radius always creates a ____________ angle

• right
• acute
• obtuse
• straight

A bicycle tire has a diameter of 27 inches. What is the radius?

• 27π
• 13.5
• 81
• 25π

What is the value of x?

• A
• B
• C
• D