# Challenge Section

## Vocab Review

A

__secant__is a segment that passes through a circle at two points. A chord is part of a secant.In the applet above, line EF and line BF are:

In the applet above, line DE and line BE are:

In the circumscribed angles we saw before, the equation for solving for the angle was outside angle = 1/2(far arc - near arc). What is the difference between the relationship in the far and near arcs in tangent-tangent problems and secant-secant problems or secant-tangent problems?