Question

А
In the figure CD is parallel to AB. The
value of y is
(A) 50°
(B) 10°
(C) 55°
(D) 65°
​

Answer 1

Answer:

answer is 60 degree

3x+2x+4x =180

9x=180

X=20

y=60 degree

Answer 2

Step-by-step explanation:

taking out the value of 2x , 3x , 4x

= 2x + 3x + 4x = 180 .....( sum of all angles of triangle is 180)

= 9x = 180

X = 180/9

X = 20

4x = 4×20 = 80°

now angle ACB +angle ACD + angle DCE = 180° ...( linear pairs)

= 80° + 90° + y = 180°

= 170 + y = 180

y = 180-170

y = 10°

hope it helps