​The sum of the consecutive angles of a parallelogram is equal to: ​

Correct option is D

Given:

​The sum of the consecutive angles of a parallelogram is equal to:

Solution:

In a parallelogram, opposite angles are equal, and adjacent angles (consecutive angles) are supplementary. ​​

For consecutive angles:

​$$∠A+∠B=180^∘$$

$$∠B+∠C=180^∘$$​​​

​$$∠C+∠D=180^∘$$

$$∠D+∠A=180^∘$$

That means the sum of any two consecutive angles is $$180 ^∘$$.

Since the sum of all four angles in a parallelogram is always $$360^∘$$.

Thus, option (d) is correct.