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Complete the proof of the Triangle Angle Sum Theorem.
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Complete the proof of the Triangle Angle Sum Theorem.

Complete the proof of the Triangle Angle Sum Theorem.-example-1
Complete the proof of the Triangle Angle Sum Theorem.-example-1
Complete the proof of the Triangle Angle Sum Theorem.-example-2
User Isep
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3 votes

Answer:

In the proof above, reason 5 is Alternate Interior Angles Theorem, and reason 7 is Angle Addition Postulate.

Explanation:

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User Kazimad
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