Question

in a parallelogram abcd,angle a=70°calculate angle b,angke c,angle d

Answer 1

Since A is 70, C is 70 opposite angles of parallelogram are equal

a+b is 180, adjacent angles are supplementary
therefore, b is 110, so d is 110

Answer 2

angle a + angle b = 180 as adjacent angles of a parallelogram are supplementary.

=> 70 + b = 180
=> b = 110

Now, Opposite angles of a parallelogram are equal.
Therefore,

angle c = angle a = 70
angle d = angle b = 110

So the angles are a=70, b =110, c =70, d=110