Question

find x if AB is parallel to CD​

Answer 1

Answer:

100

Step-by-step explanation:

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Answer 2

Answer:

given:AB||CD

TO FIND:X

construction:construct a line parallel to CD and

AB through E

name the line FE

FE||AB||CD

FE||CD

angle FED+angle CDE=180° (Co-interior angle)

angleFED+140°=180°

angle FED=180°-140°

angle FED=40°

FE||AB

angle FEB+angleABE=180° (Co-interior angles)

angle FEB+120°=180°

angle FEB=180°-120°

angle FEB=60°

x=angle FED+angle FEB

x=40°+60°

x=100°