On Roberto's shelf there are:
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<h3><em>Hey there today we will solve your problem,</em></h3>
Number 1
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<h3>Definitions</h3>- Vertical angles - <em>either of two angles lying on opposite sides of two intersecting lines.</em>
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- Linear Pair - <em>A linear pair is a pair of adjacent angles formed when two lines intersect.</em>
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Now we can solve Number 1, there is one pair of Vertical angles being ∠5 and ∠3
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Number 2
Since we know the definition of a Linear Pair we can solve this problem also, the only Linear Pair that we can choose out the ones give to us is ∠4 and ∠3, because they are adjacent.
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- ∠5 and ∠3
2. ∠4 and ∠3