Friday, January 31, 2014

Parallel Lines

  

These square tiles form parallel lines with transversals.  We can use this to demonstrate several theorems and postulates we have learned.


In this special case where the transversal is perpendicular to the parallel lines, all the angle measures are 90.  This means that not only are alternate interior angles supplementary, they are also congruent.
(NW5)









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