Parallelograms are four-sided shapes with equal and parallel sides.
The parallelogram exists, and it is unique.
From the question, we have the following parameters:
- The parallelogram has a right angle
- The dimension is 3 cm by 4 cm
The above statements means that
- All angles in the parallelogram are right angle i.e [tex]90^o[/tex]
- The parallelogram is a rectangle with a length and width of 3cm and 4cm, respectively.
The parallelogram is unique, because rectangles are special parallelograms;
See attachment for an illustration of the parallelogram.
Hence, the parallelogram exists and it is unique.
Read more about parallelograms at:
https://brainly.com/question/1563728
