Question

What is the measure of ∠DAB? Enter your answer in the box.

Answer 1

91 degrees.

Explanation:

This is a parallelogram (a quadrilateral with 2 pairs of parallel sides).

The 2 interior adjacent angles add up to 180 degrees in a parallelogram so

m < DAB = 180 - 89 = 91 degrees.

Answer 2

Answer: The measure of ∠DAB is 91°.

Explanation:

Since we have given that

AB = CD

AD = BC

So, ABCD is a parallelogram.

m∠D=89°

and we know that

∠A and ∠D are adjacent angles.

So, their sum would be supplementary.

Now, it becomes,

`89^\circ+\angle A=180^\circ\\\\\angle DAB=180^\circ-89^\circ\\\\\angle DAB=91^\circ`

Hence, the measure of ∠DAB is 91°.