Question

ABCD is a parallelgram and angle d = 155.o then the measures of angle a and angle b are​

Answer 1

Explanation:

angle d+angle b=180

155+b=180

b=180-155=25

angle a =155 opposite angles

Answer 2

Answer:

given -

angle d = 155

to find -

angle a and b

angle a +angle d = 180 degree. ( opposite angles

are supplementary)

therefore a + 155 =180

a = 180 - 155

a= 25 degree

Now, angle b

angle b + a =180

b+ 25 = 180

b = 180 - 25

b = 155 degree

angle a = 25 degree

angle b = 155 degree