9-6 Other Angles.

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9-6 Other Angles

Theorem The measure of an angle formed by 2 chords that intersect inside a circle is equal to half the sum of the measures of the intercepted arcs.

G: Chords AB and CD intersect inside a circle P:

Give values

algebraic

The measure of an angle formed by two secants, two tangents, or a secant and a tangent drawn from a point outside a circle is equal to half the difference of the measure of the intercepted arcs.

Homework pg. 359 CE 6-9 WE 1-21

Pg. 358 CE 2, 4, 5, 6, 8, 9 Pg. 360 WE 15-21