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Bellwork Thursday 9/8/16

posted Sep 8, 2016, 9:20 AM by Chris Buehnerkemper   [ updated Sep 8, 2016, 9:20 AM ]
Which statements should be used to prove that the measures of angles 1 and 5 sum to 180°?


Answer choices:
  • Angles 1 and 8 are congruent as corresponding angles; angles 5 and 8 form a linear pair.
  • Angles 1 and 2 form a linear pair; angles 3 and 4 form a linear pair.
  • Angles 5 and 7 are congruent as vertical angles; angles 6 and 8 are congruent as vertical angles.
Angels 1 and 3 are congruent as vertical angles; angles 7 and 9 form a linear pair.
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