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13 votes
13 votes
Options are:

CPCTC
Congruent
vertical angles are congruent
If alternate interior angles are congruent then lines are parallel

Options are: CPCTC Congruent vertical angles are congruent If alternate interior angles-example-1
User Paranoid
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1 Answer

22 votes
22 votes

Answer:

1) because they are vertical angles

2) because SAS

3) CPCTC

4) Converse of the Alternate Interior Angles

User LiamHT
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