Question

in a parallelogram abcd ,angle d = 105 , determine the measure of angle a

Answer 1

hey mate! here is your ans..

since we know that opposite sides of a parallelogram are parallel

it means sum of co interior angles is 180 degree

so. a+d=180

since d=105

so a=75 degree

hope this will help you

please mark it as brainliest

Answer 2

As ABCD is a parallelogram

So /_A+/_D=180°(cointerior angles)

Therefore
/_A=180°-105°
( because /_D=105)
So /_A=75°

HOPE IT WILL HELP YOU