2. ∠4 ≅ ∠1

8a. Choose the correct reason:

a. Linear Pair Postulate
b. Angle Addition Postulate
c. Vertical Angle Postulate

2 answers

d. Congruent Angle Postulate

Answer: d. Congruent Angle Postulate
Question can't be answered because of missing data.

e.g. are there some kind of parallel lines ?
where are ∠4 and ∠1 ?
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