Lines in Circles

What is the vocabulary/description for the red shapes within this picture?

• a pair of secant lines that intersect inside of the circle

• a secant line and a tangent line that intersects on the circle

• a pair of secant lines that intersect outside of the circle

• a secant line and a tangent line that intersects outside of the circle

What is the diameter?

• 8

• 16

• 10

• 4

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

• Secant

• Tangent

• point of tangency

• Chord

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

• Tangent

• Chord

• Secant

• Point of Tangency

A____ is a line that intersects a circle at two points.

• Chord

• Secant

• Tangent

• radius

What is the radius?

• 18

• 72

• 38

• 14

What can you conclude from the picture?

• m is parallel to circle C

• m is skew to circle C

• m bisects circle C

• m is tangent to circle C

Name the chord(s).

• VT

• WR

• VT and WR

• s

Name the secant(s).

• segment WR

• line VT

• s

• segment WR and line VT

AB is a common ______ tangent line.

• internal

• external