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35 votes
35 votes
In the diagram below, lines X and Y are parallel and cut by a transversal. The measure of ∠1 is 65°.

Which argument explains why the measure of ∠3 is also 65°?

User Ronit Oommen
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1 Answer

8 votes
8 votes
I don’t see a picture but based on the description you gave it’s because they’re vertical angles. This means they’re directly across from each other meaning they have the same measure.
User Alex Morega
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