Mathematics

How many pairs of adjacent angles are formed when two lines intersect in a point?


ANSWER

4


SOLUTION
We draw two intersecting straight lines .
Adjacent angles have a common arm, 
other two arms are on the either side of the common arm  and
 a common vertex.
So the pairs are
(a,b), (b,c), (c,d) & (a,d).
So there are 4 pairs of adjacent angles.
Ans- Option C.
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