What are Adjacent Angles? Video Lecture | Mathematics (Maths) Class 7

do you know what adjacent angles are
look at this image you've seen this now
let me first give you the conditions for
two angles to be adjacent listen
carefully they should have a common
vertex they should have a common arm and
the other arms of the angles are on the
opposite sides of the common arm now
let's examine this figure look at the
two angles a OB and BOC let's test for
the first condition these two angles
have a common vertex that is Oh fine so
the first condition is satisfied second
condition they have a common arm OB
right so the second condition is
satisfied as well and the other arms
have to be on the opposite sides of the
common arm so Oh a and OC as you can see
are on the opposite sides of the common
arm OB so these two angles a OB and BOC
are adjacent angles let's look at one
more example you see this figure now in
this case ml n and n L oh these are two
angles which are adjacent angles let me
test for the first condition common
vertex is L Ln is the common arm that is
the second condition and the other arms
L m and L o lie on the opposite side of
the common arm Ln so these two angles
are adjacent angles as well