katlin95
Which of the following is not necessary for a pair of angles to be vertical angles?
A.
They are nonadjacent
B.
They are congruent
C.
They have the same vertex
D.
They are complementary
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ganeshie8
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B and C are necessary, its obvious eh ?
ganeshie8
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ganeshie8
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they are congruent, have same vertex, and they are NOT adjacent. so... ?
katlin95
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so then it would A then right?
ganeshie8
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check again
ganeshie8
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ganeshie8
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those black ones are adjacent.
vertical angles are cannot be adjacent angles. they are opposite vertically by definition !
katlin95
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ohhh D? they are all congruent to eachother
ganeshie8
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yes finally :)
katlin95
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hah lol:)