Math Plane 

An introduction to angle properties. Includes definitions, theorems and postulates. Also, try the quick quiz!

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Information

• Vertical angles

• Supplementary angles

• Straight angles

• Interior angles of a triangle

• adjacent angles

• Informal proofs

• Parallel lines cut by a transversal

• Solving linear system to find angle measures

• Angle measure word problems

• Complementary angle

<--- Quick quiz

<--- Solutions

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669: A New Angle by Chris Burke (3-5-12)  (Click lower right)

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Extra Credit Question:

The ratio of an angle to its supplement is 3:7.   What is the ratio to its complement?

SOLUTION -- (Click lower right)

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