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Which of the following arguments correctly justifies the second step of the flow proof of the triangle angle sum theorem below?

A.
Linear pair postulate
B.
Vertical angles theorem
C.
Alternate exterior angles theorem
D.
Alternate interior angles theorem

2 Answers

5 votes

Answer:

D

Explanation:

User Marcin Erbel
by
3.7k points
7 votes

Answer:

D) Alternate interior angles theorem

Explanation:

User Reptilicus
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