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 Adjacent, as they
have one
common arm.
 Supplementary,
as the sum of two
angles, is 180°.
 The linear pair, as
the sum is 180°
and the non –
common arms are
opposite rays.
Vertically  When two lines intersect
Opposite each other then they
Angles form four angles. So that

 ∠a and ∠b is pair of
vertically opposite
angles.

 ∠n and ∠m is pair of
vertically opposite
angles.

 Vertically opposite
angles are equal.