The Alternate Segment Theorem

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Alternate segment theorem
Proof: http://www.absorblearning.com/media/attachment.action?quick=l9&att=1522

Circle-Circle and Angles

Practice Questions




Central angle= 1/2Inscribed angle

More study:
Circles and angles-(Circles:  Angles and Arcs )

Geometry1-Angle relationship

Corresponding angles are equal

Opposite/Vertical angles    are equal

Alternate interior angles    are equal

Alternate exterior angles    are equal

Interior angles on the same side of transversal  are supplementary angles 

Two angles are called complementary angles if the sum of their degree measurements equals 90 degrees.

Two angles are called supplementary angles if the sum of their degree measurements equals 180 degrees. 

Problem Solving: Angle relationship

1, Workout-2010-10 (70)

The supplement of an angle is 5.5 times the complement of the angle.  What is the measure of the angle?

2, school–coubdown-15-2010(60)

What is the degree measure of an angle whose measure is double the measure of its complement?

More  Study:

Angles with Parallel Lines 

Angles and angle terms