Linear pairs, vertical angles, adjacent angles
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yes
Are ∠1 and ∠4 vertical angles?
no
Are ∠2 and ∠4 vertical angles?
no
Are ∠3 and ∠5 a linear pair?
no
Are ∠3 and ∠5 vertical angles?
no
Are ∠4 and ∠1 vertical angles?
yes
Are ∠7 and ∠8 a linear pair?
a linear pair
∠1 and ∠2 are
a linear pair
∠1 and ∠5 are
adjacent angles
∠4 and ∠3 are
vertical angles
∠5 and ∠2 are
adjacent angles
∠5 and ∠4 are