Question

ABCD is a trapezium in which AB || CD. Find x and y. angle A =y,angle B=80°,angle C=x and angle D=120°​

Answer 1

Answer:

x= 100°,. y= 60°

Step-by-step explanation:

AB//CD if AD is transversal

angle A+ angle D = 180

y+120 = 180

y=180-120

y= 60°

similarly

80+x=180

x=180-80=100

x= 100°

Answer 2

Answer:

x=100

y=60

Step-by-step explanation:

In trapezium ABCD,

angleA=y

angleB=80°

angleC=x

angleD=120°

angleA+angleB=180°(co interior angle)

x+80°=180°

x=100

similarly,

angleC+angleD=180°(co interior angle)

y+120=180

y=60