1.

From the given diagram, if a transversal intersects two parallel lines, then what is the relation between pair of alternate interior angles ∠4 and ∠5?

A. ∠4 + ∠5 = 180°
B. ∠4 + ∠5 = 90°
C. ∠4 = ∠5
D. ∠4 > ∠5
Answer» B. ∠4 + ∠5 = 90°


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