Question

in the given figure l parallel m find x

Answer 1

angle ABE +angleDEB =180° ( co-interior)
65°+ angle DEB =180
angle DEB =115 = y (V. O. A)

in triangle CEF
x +115+20 =180
x +135 =180
x =180-135
x= 45°

Answer 2

Given--
/_B=65°
/_F=20°
So, /_B+/_E=180
65+/_E=180
/_E=180-65
/_E=115
Therefore,
y=115 (Vertically opposite angle)

=/_y+/_x+/_f=180
=115+/_x+/_20=180
=135+x=180
= x=180-135
=45°