Parallel lines, transversals and the angles that are formed

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Parallel lines, transversals and the angles that
are formed!
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Corresponding Angle Postulate

• If two parallel lines are crossed by a
  transversal, then each pair of corresponding
  angles is congruent.

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Alternate Interior Angles Theorem

• If two parallel lines are crossed by a
  transversal, then each pair of alternate interior
  angles is congruent.

4
Consecutive Interior Angles Theorem

• If two parallel lines are crossed by a
  transversal, then each pair of consecutive
  interior angles is supplementary.

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Alternate Exterior Angles Theorem

• If two parallel lines are crossed by a
  transversal, then each pair of alternate exterior
  angles is congruent.

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Perpendicular Transversal Theorem

• In a plane, if a line is perpendicular to one of
  two parallel lines, then it is perpendicular to
  the other.

a
b
c
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Application
p. 134 7-15 Work at own speed. If you are
stumped, watch me.
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Homework

• P. 135 17-43 skip none!
• Begin reviewing
• Good habits begin today