6.5 Other Angle Relationships in Circles

Theorem 6.13 If a tangent and a chord intersect at a point on the circle, then the measure of each angle formed is one half the measure of its intercepted arc.

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Theorem 6.14 Angles Inside the Circle Theorem: If two chords intersect inside a circle, then the measure of each angle is one half the sum of the measures of the arcs intercepted by the angle and its vertical angle.

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Theorem 6.15 Angles Outside the Circle Theorem: If a tangent and a secant, two tangents or two secants intersect outside a circle, then the measure of the angle formed is one half the difference of the measures of the intercepted arcs.

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Angles: On, Inside, Outside On: Angle is half the intercepted arc. Inside: Angle is half the sum of the intercepted arcs. Outside: Angle is half the difference of the intercepted arcs.

Find m<1

Find mEFG

Find the values of x and y.

Find the value of x.

Worksheet # 37 – 67 odds Homework # 38 – 69 evens