Problem :
Is the following a drawing of a secant line, tangent line, tangent
segment, or none of these?

Secant Line

Problem :
Is the following a drawing of a secant line, tangent line, tangent segment, or
none of these?

Tangent Line

Problem :
Is the following a drawing of a secant line, tangent line, tangent segment, or
none of these?

None of These

Problem :
Is the following a drawing of a secant line, tangent line, tangent segment, or
none of these?

Tangent Segment

Problem :
If a secant line AB intersects a circle at
points A and B, and a diameter
PQ of the
circle
bisects the chord AB, what is the
angle formed at the intersection of
diameter PQ
and
secant line AB?

The angle formed is a right angle, because if
a diameter bisects a chord, it is
perpendicular to that chord.

Problem :
If a secant line contains the center of a circle, how does that
line divide the circle?

The secant line divides the circle into two semicircles.