Challenge Section

Author:
Kim Hager
Topic:
Angles

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:

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

Check your answer here

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?

After checking your answers and sharing with a classmate but before going on to the next worksheet, please complete this Khan Academy module.

What do you notice about the figures in the applets? What do you wonder?