Calculate the Perimeter of Parallelogram ABCD with Side Length 7

To solve the problem of finding the perimeter of the parallelogram ABCD, we must first ensure we have complete information. The perimeter $P$ of a parallelogram is calculated using the formula:

where $a$ and $b$ are the lengths of two adjacent sides.

Upon analyzing the problem, we find:

• The visual suggests only one side length is explicitly labeled as 7.
• For calculating the full perimeter, both adjacent side lengths are needed.

In the absence of additional side length information or any angles, we cannot accurately determine the perimeter of this specific parallelogram.

Considering the facts, there is not enough data to compute the perimeter.

Therefore, the correct choice is: Not enough data.