Question

in the adjoining diagram lines AB,CD and EF parallel
calculate values of X and Y hence find the reflex angle ECA​

Answer 1

Answer:

Given,AB||CD||EF

Since,CD||EF

Therefore,It forms a adjacent angle

=120+x =180

=X = 60°

Similarly,CD||AB

Therefore,It forms a adjacent angle

=140 + y=180

=Y=40°

Therefore,Angle ECA =X +Y

=60 + 40

=100°

Thus,Reflex of Angle ECA =(360-100)°

=260°

Step-by-step explanation:

HOPE IT HELPS.

Answer 2

Answer:

Step by Step explanation:

AB is Parallel to CD so

x+140'=180' ( because Co-interior angles)

x=180'-140'

x=40'

similarly

EF is Parallel to CD so

y+120'=180' ( because Co-interior angles)

y=180'-120' y=60